the thick film resistors have always been trouble whatever set they were used in , very poor in the Thorn 3500 and still trouble in much later sets such as the Hitachi with the HM6251 frame module although these could be just resoldered .
Another excellent video - thank you for sharing it with us and for also sharing your expert knowledge on Televisions. I really enjoy your videos - they are so interesting and I always learn something from them.
This TV takes me back, i had just turned 21 and had compeleted my apprenticship as a young TV engineer in 1976. I can't remember seeing many of this chassis on my bench, the Philips 210 was a regular visitor with all the usual stock faults including the LOPT that often failed. Most of my test gear such as a tube booster was home made from a magazine design. At least you could see the components back then without a microscope ! Thanks for this trip down memory lane Michael.
I had a 210 but stupidly sold it a long time ago , I too made a crt tester in 1984 from a design in Television magazine , a few years before I had the money to buy the Leader.
@@michaeldranfield7140 Today we need a backlight tester, except it wouldn't work on Oled displays ! Who would have even guessed how far the TV tech has changed since the colour TV boom era. Today more sets are scrapped than repaired, the same is about to happen with cars. Perhaps we should retrain as EV repairr techs, we know how to handle high voltages !
@@michaeldranfield7140 I did have televition mags going back years worked with guys toni less he worked for granada bill toni 2 and some others shop closed down but me an toni still did work from his flat miss them all am the last one still on earth
@@michaeldranfield7140 good to have you back. Glad to hear you were helping people. We all need to do that more. But of course it does not surprise me that you are helping people. You always seem to be a very caring person
Hi Michael. I'm retired now from this game of ours, and all my past copies of Television are long gone. The one mono tv I still have is an ITT 20 inch, badged RGD from 1971. It's a hybrid single standard, with perfect tube and cabinet, ex Mom and Dad. It's set up in the dining room, and when I put you tube on it via an amazon firestick, hdmi to composite and on to an rf modulator the kids are in disbelief. That one of yours must surely be one of the last of the large screen monos ever produced. Keep up the good work.
I think it may well be one of the last pye monos but I have another one which is earlier which might be more interesting as its a hybrid but I just need to sort out the woodworm before I bring it inside, its in the van at the moment.could never get rid of all my television magazines .
When the back was taken off a similar set in our Worksop, a load of cockroaches ran out. We had to get pest control in to fumigate the premises. Very nostalgic vlog, many thanks for posting it.
Fantastic video as always and a brilliant result all things considered. I would recommend replacing that 1n8 cap with a modern equivalent as those green tubular ones are notoriously unreliable, known for failing and sending the EHT sky high, blowing a hole in the neck of the CRT
I have had people say these green caps are un reliable but is it just because they are old or were they un reliable from the beginning , wax paper caps were ok once upon a time .
I think its through age, as they’ve lasted til now. I’ve always been told to toss any out and to use a modern replacement instead of another of those green tubulars. I’m by no means an expert, just echoing what others have told me
Vaguely remember this chassis but never saw many, interesting to see how little actual stuff you needed to drive a wide angle crt right at the end of that era, shame you can't just drop the tube off at the local re-gunning shop anymore..
31:20 - those green tuning capacitors were not designed for the voltage spikes they would get. They were well-known in Philips sets of the 70s and early 80s (which of course is what this technically is!) Those capacitors managed to work in that job anyway but now as they age they are becoming less capable of jobs they were not designed to do but still work fine with jobs they were designed for.
@@stickytapenrust6869 Very true, but i lost count of how many 5n1 flyback tuning caps i replaced in the g8 chassis, thinking back I'm not certain there was the choice of dielectric there is now, except for special applications, anyway, Philips did come up with better components for the job.
I find sometimes with black and white tv sets that haven't been used since the late 70's or early 80s the whole set needs a gentle warm up and run the set under supervision for a good week I find the tube brighten up and sharpen up by itself without making any adjustments. all i am saying sometimes time and patience is needed
wont be long before the workings of CRT has been completely forgotten about if it wasn't for youtube , were now in a disposable age and the people who use to do this stuff are all getting older .
For those of us who know these things - it is all elementary level It is quite odd that some things we never forget and others that we just cannot remember. PYE had a factory in MARICKVILLE - NEW SOUTH WALES 16 minutes drive (7.6 km) via Princes Hwy from the SYDNEY CBD PHILIPS - PYE and KREISLER made pretty good TV sets and there were many components they shared. AWA / THORN were a nightmare -- things improved when THORN was dumped and AWA became aligned with MITSUBISHI. The factory was along Victoria Road RYDALMERE ( SYDNEY ) SAMSUNG also had their establishment in RYDALMERE - Later relocating to the State of QUEENSLAND - along with BOEING - where State taxes were much lower as was the cost of operating a business - saw many companies relocate North of the border { AWA } AMALGAMATED WIRELESS AUSTRALIA Eventually the AWA brand was sold to CHINA - and AWA shifted to gambling - aka KENO - which continues to thus day. AWA also manufactured all the MARCONI equipment
Nice TV-set, these green (and also come in pink) capacitors are Paper-resin type capacitors. I have seen even new old stock once go bad after a few hours of service. If you are planning on run the set regularly, it would replaced with a decent Wima FKP1 capacitor for peace of mind.
We had a few of these, still being delivered new in 1980 usually in a Philips lorry. My memory was one soak testing on the bench mid morning in November showing Test Card F with bad interfearence. In the end, another test card from ZDF appeared completely blotting out BBC! This remained for some time - very unusual conditions...
Dont think I have ever seen one of these before , I would have thought that by 1980 the demand for large screen black and white would have dwindled to next to nothing due to the popularity of colour .
Wonderful...I like electronics very much and am 17 from Africa. Hopefully in the future I will learn electronics in college.... Keep it up am learning a lot from you!
We sold a few new Pye tvs at the time but this would be probably the last large screen tv chassis that was sold in mid 70s as most people were buying or renting colour tv by then , Philips used that 300 and horrid 320 chassis and Thorn had moved on to the 1615 chassis so choice was narrowed down .Nice to see tv still in working order tho maybe the tube will improve with use rather than giving it a "boost" or tap with a screwdriver like we used to do
The CRT has woken up considerably since I first switched it on , I remember as a small boy the TV rental man coming out to our Thorn 1400 with a picture fault, he tapped the neck of the tube and the picture came back on , the next day it went off again and they took it away to fit a new tube .
My Gran who lived in North Devon had the same set as this. She had it for over 20 years from new. She couldn’t watch colour television. I always liked the picture collapse when turned off.
Turned OFF not turned off You have not yet learned the difference between ON/ OFF and on / off They sound the same - but are use din different contexts. When referring to SWITCHING - it is always ON / OFF and often written on the switch - so pay attention to detail on / off would be used in a context such as: I start work on Monday and I am off on the week-end Unfortunately you were never taught correct grammatical Legal English and failed to educate yourself by READING - STUDYING - OBSERVING - PAYING ATTENTION TO DETAIL and learning from those who know what you do not yet know. To learn - you have to be teachable.
be nice to revive old memories, I have watched coronation street for donkeys years , I remember the episode when mike Baldwin had an affair with deadrie! I still watch it today !
Wow, what a world away from other TVs of just a few years earlier like the Thorn 1500. This must have been one of the very last new monochrome designs with lots of modern features. I wonder if it has gated AGC rather than the usual rubbish mean level AGC which doesn't allow for black. Pity about the focus electrode. I once knew someone who had a monochrome portable with infra red remote control, I remember thinking how that was an interesting combination, I wish I could remember what make it was.
I have a very soft spot for the Thorn 1500, I brought many a set back from the tip on my bike in the 70 s and once found one on the pavement while walking a girlfriend back to the bus stop in 1982, so for me nothing tops the 1500 I'm afraid to say , I would have thought demand for large screen monos had dwindled to a trickle by the time this set was on the market .
@@michaeldranfield7140 We call 'em a digital set top box, outputst a rf signal through standard coax. Was wondering if it happened through out world, although wouldn't be surprised if America didnt switch off all the analog. There were many times when I had very poor analog reception, but the audio was ok , and you could see something amongst the noise,. Cant do that with digital
@@michaeldranfield7140 Otherwise known as a DIGITAL SET-TOP BOX There are still people using CR TeleVisions with a DSTB attached. I was called out some ten months ago to repair a PHILIPS 26'' crt TV where the sound had failed. The set belongs to an elderly Greek man. He won't buy a modern TV as it will not fit in the ' family Heirloom ' wall unit which is only designed to accommodate a CRT TV . I explained to him that when he dies the Wall unit will end up in land-fill and no-one will care about it So why watch a 4:3 aspect ratio CRT TV just to hang on to a wall unit that will end up as fire-wood. I mentioned to him that when the TV fails again I will not be repairing it. In any event the CRT is failing - phosphor faded and loss of brightness. Beats me how he still watches it.
the tubes were always worse in the 24 inch sets than in the 20 s but this has woken up considerably since the start of the video although the focus is still very poor .
we had a 20 inch one with very similar innards from new many years ago, early 80s , cant remember model no. but T18something, but not a T181 as said in the book, i googled a 181 and its not that, it was used for quite a few years until we were given a colour set, it was eventually sold to someone in the 90s, i got it back a few years later when it was worn out, tube almost no emission! it had a large white ceramic power resistor in it, no thick film or smaller resistor on heatsink! maybe later version
the thick film unit only seems to be used in the later production sets and a few small differences in the line output stage , no doubt there are other models I have not seen , those radio TV servicing books make fascinating reading .
The good old days when TV repair/sales was a good trade to be in. Sets could last for twenty years unlike modern rubbish where you are lucky if it lasts eighteen months. That's progress for you.
i cant say I have experienced trouble with these caps when the sets were just a few years old , but yes a few people made the same comment, I have had the 470uf red pye cap in the G11 blow the tube neck though.
@@michaeldranfield7140 i've heard of that as well, presumably it makes the ht supply rise, but surely the glow switch should activate in that case? i had one of those green caps, 2.7nf, pop the end off and go low capacity in a pye ct200b/713 chassis, the eht flashed over on top of the line output transformer
Great video as always, do you make a lot of your own test equipment? I noticed the reforming capacitor box is this homemade? Would you share the designs of some of your equipment if you do ? Thanks for sharing. Kind regards Paul.
I use to make all my own stuff in years gone by , don't seen to have the time to do it now , the cap reforming box was just a modified design from Practical electronics magazine .
When I was a kid in the 80s my parents rented a TV through Radio Rentals. The remote control was wedge shaped and slotted into a space below the screen along the bottom. Would love to know what make/model it was.
if it was a colour TV the set you are referring to is the ITT CVC25 chassis , I think , the remote control had a couple of coloured buttons, orange and red and the rest were black , when it was docked in the front of the TV the buttons stuck out so you could still use it to control the set.
@michaeldranfield7140 yes it was a full sized colour set. Quite modern looking for 1985 (ish) with a dark grey housing. The remote apart from being black and wedge shaped had raised round buttons and could be used when docked in the TV as you described. It's the only TV I can remember from my childhood and ive been trying to find it on the web for years. Before that we rented a set that was always going wrong. That one had a sliding wood shutter on the front.
Indeed it was, and believe it or not, even today you can still apply for a B&W licence! I also recall that some older customers actually preferred to watch TV in B&W; coupled with the fact that colour TV's at the time were an expensive (and not always reliable!) investment, you can see how these stayed popular even into the eighties, or simply as a second set.
I'm 53 years old and we didn't have a colour TV until I was 12 in the early 80s. The licence was much cheaper for B&W and even as late as that I think it was common to rent because of the likelihood of them going wrong. I guess reliability as well as a bigger screen for less would have been the advantage of the Pye. I remember my parents paying £10 a month, which adjusted for inflation would buy you a very nice 43" with a year's rent at today's prices!
I have to add that my parents purchased a B&W set in 1973 just before the go live of colour. Colour sets were half the price of a Ford Cortina in NZ. Our Phillips set never went wrong and was still used 20 years later.
No I checked the tube base, I wouldn't be surprised if its not because the emission of the CRT has dropped but didn't want to rejuvenate as this is very short lived
@@michaeldranfield7140 Take em apart and run an ordinary lead pencil along the tracks to repair them, you are right, spraying these with any type of cleaning oil will destroy them.
Wonder if it's worth giving the tube a re-gun? Not sure if that's still an available service. As you say the rest of the set looks in very good order. Thanks for another great watch 👍. Cheers Pete' New Zealand.
@@stickytapenrust6869 Ah. That could make it trickey 🤔. We had two re gun service places here. Don't know if either are still in opertion, but would be a long way to send a tube here if they are 😄
I remember my father playing about with these old TV's ,then I saw the mullard sticker and I remembered that name from back in the day 60yrs ago now so just googled it and it looks like it they were something to do with crts and tv repairs? But couldn't get open their advert ,it looks like someone's accusing them of some dodgy dealings and they have shut down their link,that apart thanks for the vid👍.....
mullard was once a world famous company who started off making valves, then moved onto CRT s , semiconductors, TV tubes and electronic components, although well gone now most of there stuff is still very highly regarded and some audio valves sell for large amounts of money on the internet.
@@michaeldranfield7140 I have an HMV 1960 VHF radio with some Mulard OC170 and OC171 transistors which are still going strong. They were the first transistors manufactured in the UK that could work up to around 100MHz.
Not quite. There was the Thorn 1615, a Portuguese-built Pye and a Cap10-branded Samsung all in the early-mid 80s. There was also a 20” Grundig that I’ve got in my collection… somewhere!
getting up that way for large screen but I think production of small screen portable back and white sets continued till about 1985 ish , they were popular as second and bedroom sets
My guess is next to none. I can see two main reasons: the conductive glue that connects the COF drivers to the LCD panel will probably fail within a few decades, second: data retention time of modern flash memories is 5-20 years. So at 40 years, most of the sets will have corrupted firmware. Unfortunately the same is true to modern test equipment, and everything that uses flash memory.
Probley none, especially with lead free solder and all software driven and of course not forgetting built in obsolescence , a way of making you replace your TV .
@@andrewwalsh5837 I have a Sony DVD recorder from ~2006-2008, in which the firmware got corrupted in about 2019. I bought it cheap with the fault of boot looping, managed to do a factory reset through the service menu, it worked for a day than started boot looping again, and the service menu is not accessible anymore. I should buy an other one from that same model with a dead drive but working firmware, and copy the flash chip.
sadly not, no one in there right mind would be going into TV repairs now , were in a disposable world, even the city and guilds qualification in TV servicing no longer exists, due no doubt to lack of demand.
Авто/Мото
Once again Michael, a really informative and interesting presentation. Thanks.
Many thanks for that , more coming soon .
A wonderful dive into this old Pye. Boy they loved the thick film units back then. Damned unreliable things
the thick film resistors have always been trouble whatever set they were used in , very poor in the Thorn 3500 and still trouble in much later sets such as the Hitachi with the HM6251 frame module although these could be just resoldered .
Another excellent video - thank you for sharing it with us and for also sharing your expert knowledge on Televisions. I really enjoy your videos - they are so interesting and I always learn something from them.
More to come soon !
This TV takes me back, i had just turned 21 and had compeleted my apprenticship as a young
TV engineer in 1976.
I can't remember seeing many of this chassis on my bench, the Philips 210 was a regular visitor
with all the usual stock faults including the LOPT that often failed.
Most of my test gear such as a tube booster was home made from a magazine design.
At least you could see the components back then without a microscope !
Thanks for this trip down memory lane Michael.
I had a 210 but stupidly sold it a long time ago , I too made a crt tester in 1984 from a design in Television magazine , a few years before I had the money to buy the Leader.
@@michaeldranfield7140 Today we need a backlight tester, except it wouldn't work on Oled displays !
Who would have even guessed how far the TV tech has changed since the colour TV boom era.
Today more sets are scrapped than repaired, the same is about to happen with cars.
Perhaps we should retrain as EV repairr techs, we know how to handle high voltages !
Miss the old days in the TV shop were we made are own Tube booster way back in 1991
Still got my homade crt tester from 1984
@@michaeldranfield7140 I did have televition mags going back years worked with guys toni less he worked for granada bill toni 2 and some others shop closed down but me an toni still did work from his flat miss them all am the last one still on earth
Great Mr. Michael. Good to see you again.
got my life back now , spent the last 6 months helping someone out so didn't time for long videos but more coming soon .
@@michaeldranfield7140 good to have you back. Glad to hear you were helping people. We all need to do that more. But of course it does not surprise me that you are helping people. You always seem to be a very caring person
Hi Michael.
I'm retired now from this game of ours, and all my past copies of Television are long gone.
The one mono tv I still have is an ITT 20 inch, badged RGD from 1971.
It's a hybrid single standard, with perfect tube and cabinet, ex Mom and Dad.
It's set up in the dining room, and when I put you tube on it via an amazon firestick, hdmi to composite and on to an rf modulator the kids are in disbelief.
That one of yours must surely be one of the last of the large screen monos ever produced.
Keep up the good work.
I think it may well be one of the last pye monos but I have another one which is earlier which might be more interesting as its a hybrid but I just need to sort out the woodworm before I bring it inside, its in the van at the moment.could never get rid of all my television magazines .
extended edition - Thank you Michael - You are the british Shango066 :-)
Shango has quite an acid tongue, though. I’m gonna start doing resurrection videos soon and I have a similar acid tongue as Shango.
Great video. Those green caps on the Lineoutput tuning always seem to fail. I’ve seen many fail in Philips G11 Lineoutput panels
I have a bit more time now so more coming soon .
Great stuff Mr. Dranfield!
Many thanks for that , I have another also but a hybrid so that should be more fun .
Always a pleasure watching your videos, I enjoy the expertise and knowledge you have not to mention your inventory.😊
you mean 50 years of hoarding !
Brings back memories of unboxing from new
Glad you liked the memories, more coming soon .
Nice video good to watch your knowledge of the old set. That spray brought it up looking like a showroom tv 👌
I have been using that ambercleanse for years , its very good for TV cabinet cleaning .
When the back was taken off a similar set in our Worksop, a load of cockroaches ran out. We had to get pest control in to fumigate the premises. Very nostalgic vlog, many thanks for posting it.
I have another but earlier hybrid , going to be more interesting , no cockroaches but its got woodworm so I don't want to bring it in yet .
another First class job well done
More to come soon !
My relief when you said that you needed to read the manual to refresh your memory to use some test equipment….
never thought I would be repairing CRT stuff again so forgot how the tester works, I bought that brand new in about 1987 !
Thanks Michael. Ive been looking forward to seeing the next video if yours and it didnt disapoint. Looking forward fo the next TV.
More coming soon , I have some more sets now !
great presentation thanks Michael
Many thanks for that , more stuff coming soon .
Fantastic video as always and a brilliant result all things considered.
I would recommend replacing that 1n8 cap with a modern equivalent as those green tubular ones are notoriously unreliable, known for failing and sending the EHT sky high, blowing a hole in the neck of the CRT
I have had people say these green caps are un reliable but is it just because they are old or were they un reliable from the beginning , wax paper caps were ok once upon a time .
I think its through age, as they’ve lasted til now. I’ve always been told to toss any out and to use a modern replacement instead of another of those green tubulars. I’m by no means an expert, just echoing what others have told me
Great video as usual Michael thank you. I only saw one or two of these in my shop
don't think I have ever seen one of these .
Great video well explained, love to see more of these types of videos well done.
its quite time consuming but there will be more soon .
Great video Michael - thanks for posting
No problem , many thanks for watching , more coming soon .
Vaguely remember this chassis but never saw many, interesting to see how little actual stuff you needed to drive a wide angle crt right at the end of that era, shame you can't just drop the tube off at the local re-gunning shop anymore..
I wouldn't think anyone re gunns CRTs now , another long lost art .
31:20 - those green tuning capacitors were not designed for the voltage spikes they would get. They were well-known in Philips sets of the 70s and early 80s (which of course is what this technically is!) Those capacitors managed to work in that job anyway but now as they age they are becoming less capable of jobs they were not designed to do but still work fine with jobs they were designed for.
They weren't much good, used to regularly fail in the g8 colour chassis.
@@monteceitomoocher They were good *in applications they were designed for*. They weren’t designed for the voltage pulses you get in a line timebase.
@@stickytapenrust6869 Very true, but i lost count of how many 5n1 flyback tuning caps i replaced in the g8 chassis, thinking back I'm not certain there was the choice of dielectric there is now, except for special applications, anyway, Philips did come up with better components for the job.
a few people have said this but are they just un reliable due to age , I don't remember them failing 40 odd years ago ?
I find sometimes with black and white tv sets that haven't been used since the late 70's or early 80s the whole set needs a gentle warm up and run the set under supervision for a good week I find the tube brighten up and sharpen up by itself without making any adjustments. all i am saying sometimes time and patience is needed
Really great video indeed and very informative
Thank you
Many thanks for that , more coming soon .
Don't know a thing about the workings of a TV or what he was explaining, but found it fascinating anyway.
wont be long before the workings of CRT has been completely forgotten about if it wasn't for youtube , were now in a disposable age and the people who use to do this stuff are all getting older .
For those of us who know these things - it is all elementary level
It is quite odd that some things we never forget and others that
we just cannot remember.
PYE had a factory in MARICKVILLE - NEW SOUTH WALES
16 minutes drive (7.6 km) via Princes Hwy from the SYDNEY CBD
PHILIPS - PYE and KREISLER made pretty good TV sets
and there were many components they shared.
AWA / THORN were a nightmare -- things improved when
THORN was dumped and AWA became aligned with MITSUBISHI.
The factory was along Victoria Road RYDALMERE ( SYDNEY )
SAMSUNG also had their establishment in RYDALMERE -
Later relocating to the State of QUEENSLAND - along with BOEING -
where State taxes were much lower as was the cost of operating
a business - saw many companies relocate North of the border
{ AWA } AMALGAMATED WIRELESS AUSTRALIA
Eventually the AWA brand was sold to CHINA - and AWA
shifted to gambling - aka KENO - which continues to
thus day.
AWA also manufactured all the MARCONI equipment
Nice TV-set, these green (and also come in pink) capacitors are Paper-resin type capacitors. I have seen even new old stock once go bad after a few hours of service. If you are planning on run the set regularly, it would replaced with a decent Wima FKP1 capacitor for peace of mind.
We had a few of these, still being delivered new in 1980 usually in a Philips lorry. My memory was one soak testing on the bench mid morning in November showing Test Card F with bad interfearence. In the end, another test card from ZDF appeared completely blotting out BBC! This remained for some time - very unusual conditions...
Dont think I have ever seen one of these before , I would have thought that by 1980 the demand for large screen black and white would have dwindled to next to nothing due to the popularity of colour .
It's lovely not to see a single scratch.
it is , I have another too but its got woodworm so going to have to recover the second with Fablon .
good ol' servisol/ambersil foam cleaner, its good stuff !
I have used this you years , excellent stuff.
Wonderful...I like electronics very much and am 17 from Africa. Hopefully in the future I will learn electronics in college.... Keep it up am learning a lot from you!
no servicing courses now in the UK , TVs are just considered disposable
Very interesting like you i have not come across that chassis ,but i do like the simplisity.
very simple circuitry and a pleasure to repair
We sold a few new Pye tvs at the time but this would be probably the last large screen tv chassis that was sold in mid 70s as most people were buying or renting colour tv by then , Philips used that 300 and horrid 320 chassis and Thorn had moved on to the 1615 chassis so choice was narrowed down .Nice to see tv still in working order tho maybe the tube will improve with use rather than giving it a "boost" or tap with a screwdriver like we used to do
The CRT has woken up considerably since I first switched it on , I remember as a small boy the TV rental man coming out to our Thorn 1400 with a picture fault, he tapped the neck of the tube and the picture came back on , the next day it went off again and they took it away to fit a new tube .
Amazing video, i would love to go through your shop, i bet you have some lovely beta vcr's in there!
I do actually have a few betamax yes, but many years ago threw un countable numbers away when no one wanted them .
Hi Michael, hope you're keeping well!
Its a long story but I have got my life back now so a bit more time for making videos, I have spent the last 6 months helping someone out .
My Gran who lived in North Devon had the same set as this. She had it for over 20 years from new. She couldn’t watch colour television. I always liked the picture collapse when turned off.
the good old days when we only had 3 channels and TV ceased transmission at midnight.
👍🏻
Turned OFF
not turned off
You have not yet learned the difference between ON/ OFF and on / off
They sound the same - but are use din different contexts.
When referring to SWITCHING - it is always ON / OFF
and often written on the switch - so pay attention to detail
on / off would be used in a context such as:
I start work on Monday and I am off on the week-end
Unfortunately you were never taught correct grammatical Legal English
and failed to educate yourself by READING - STUDYING - OBSERVING -
PAYING ATTENTION TO DETAIL and learning from those who know
what you do not yet know.
To learn - you have to be teachable.
@@andrew_koala2974”use din different contexts” 🤣
i would love to watch classic Coronation Street on this TV
be nice to revive old memories, I have watched coronation street for donkeys years , I remember the episode when mike Baldwin had an affair with deadrie! I still watch it today !
@@michaeldranfield7140 you can't beat corrie
That would have been a monster back then, wouldn't it, 24"?
It would and the tubes never lasted as long as the smaller 20 inch sets I use to find.
Wow, what a world away from other TVs of just a few years earlier like the Thorn 1500. This must have been one of the very last new monochrome designs with lots of modern features. I wonder if it has gated AGC rather than the usual rubbish mean level AGC which doesn't allow for black. Pity about the focus electrode.
I once knew someone who had a monochrome portable with infra red remote control, I remember thinking how that was an interesting combination, I wish I could remember what make it was.
I have a very soft spot for the Thorn 1500, I brought many a set back from the tip on my bike in the 70 s and once found one on the pavement while walking a girlfriend back to the bus stop in 1982, so for me nothing tops the 1500 I'm afraid to say , I would have thought demand for large screen monos had dwindled to a trickle by the time this set was on the market .
All TV signals in Australia are now digital, last analog one was switched off about 10 years ago.
The analog was switched off here in the UK in 2012
we switched off about 12 years ago but all you need is an old sky box with RF outlet to run these old sets .
@@michaeldranfield7140 We call 'em a digital set top box, outputst a rf signal through standard coax. Was wondering if it happened through out world, although wouldn't be surprised if America didnt switch off all the analog. There were many times when I had very poor analog reception, but the audio was ok , and you could see something amongst the noise,. Cant do that with digital
@@michaeldranfield7140
Otherwise known as a DIGITAL SET-TOP BOX
There are still people using CR TeleVisions
with a DSTB attached.
I was called out some ten months ago to repair
a PHILIPS 26'' crt TV where the sound had failed.
The set belongs to an elderly Greek man.
He won't buy a modern TV as it will not fit in the
' family Heirloom ' wall unit which is only designed
to accommodate a CRT TV .
I explained to him that when he dies the Wall unit
will end up in land-fill and no-one will care about it
So why watch a 4:3 aspect ratio CRT TV just to hang
on to a wall unit that will end up as fire-wood.
I mentioned to him that when the TV fails again I will
not be repairing it.
In any event the CRT is failing - phosphor faded and
loss of brightness.
Beats me how he still watches it.
Judging by the IC date codes, the set appears to be from the second half of 1977.
yes, it would be quite late this for a large screen black and white , although I think small screen mono sets were still produced till about 1985.
Great condition, considering its age. Brought back some memories, 18kV seemed about right or was it low?
Off the top of my head I think its about right, 18-19Kv .
18KV is about right
Remember seeing quite a few late Philips/Mullard B&W tubes with poor cathode emission back in the 1980s with poor contrast control.
the tubes were always worse in the 24 inch sets than in the 20 s but this has woken up considerably since the start of the video although the focus is still very poor .
wow
I have more sets to do soon !
we had a 20 inch one with very similar innards from new many years ago, early 80s , cant remember model no. but T18something, but not a T181 as said in the book, i googled a 181 and its not that, it was used for quite a few years until we were given a colour set, it was eventually sold to someone in the 90s, i got it back a few years later when it was worn out, tube almost no emission! it had a large white ceramic power resistor in it, no thick film or smaller resistor on heatsink! maybe later version
the thick film unit only seems to be used in the later production sets and a few small differences in the line output stage , no doubt there are other models I have not seen , those radio TV servicing books make fascinating reading .
The good old days when TV repair/sales was a good trade to be in. Sets could last for twenty years unlike modern rubbish where you are lucky if it lasts eighteen months. That's progress for you.
too right, modern sets are just considered disposable .
i've heard in many places those green philips caps fail a lot, they can cause eht to rocket and blow through crt necks in some sets!
i cant say I have experienced trouble with these caps when the sets were just a few years old , but yes a few people made the same comment, I have had the 470uf red pye cap in the G11 blow the tube neck though.
@@michaeldranfield7140 i've heard of that as well, presumably it makes the ht supply rise, but surely the glow switch should activate in that case? i had one of those green caps, 2.7nf, pop the end off and go low capacity in a pye ct200b/713 chassis, the eht flashed over on top of the line output transformer
Great video as always, do you make a lot of your own test equipment? I noticed the reforming capacitor box is this homemade? Would you share the designs of some of your equipment if you do ?
Thanks for sharing. Kind regards Paul.
I use to make all my own stuff in years gone by , don't seen to have the time to do it now , the cap reforming box was just a modified design from Practical electronics magazine .
Where do you get your tins of amber lean? I use to use it meany years ago brilliant stuff.
Paul.
I get it from same place I always have for donkeys years , CPC in Preston ,.
When I was a kid in the 80s my parents rented a TV through Radio Rentals. The remote control was wedge shaped and slotted into a space below the screen along the bottom. Would love to know what make/model it was.
if it was a colour TV the set you are referring to is the ITT CVC25 chassis , I think , the remote control had a couple of coloured buttons, orange and red and the rest were black , when it was docked in the front of the TV the buttons stuck out so you could still use it to control the set.
@michaeldranfield7140 yes it was a full sized colour set. Quite modern looking for 1985 (ish) with a dark grey housing. The remote apart from being black and wedge shaped had raised round buttons and could be used when docked in the TV as you described. It's the only TV I can remember from my childhood and ive been trying to find it on the web for years. Before that we rented a set that was always going wrong. That one had a sliding wood shutter on the front.
As they say, looking at the initial state of the cabinet, you'd need a tetanus shot just looking at it.
I find it strange that someone would buy a B&W Television in 1976, colour had been in the UK for a long time. Was the TV license cheaper?
Indeed it was, and believe it or not, even today you can still apply for a B&W licence! I also recall that some older customers actually preferred to watch TV in B&W; coupled with the fact that colour TV's at the time were an expensive (and not always reliable!) investment, you can see how these stayed popular even into the eighties, or simply as a second set.
I'm 53 years old and we didn't have a colour TV until I was 12 in the early 80s. The licence was much cheaper for B&W and even as late as that I think it was common to rent because of the likelihood of them going wrong. I guess reliability as well as a bigger screen for less would have been the advantage of the Pye. I remember my parents paying £10 a month, which adjusted for inflation would buy you a very nice 43" with a year's rent at today's prices!
Not only was the licence cheaper but the television set was considerably cheaper to buy than a colour.
I have to add that my parents purchased a B&W set in 1973 just before the go live of colour. Colour sets were half the price of a Ford Cortina in NZ. Our Phillips set never went wrong and was still used 20 years later.
Focus fault: Tube base connection bad, Michael?
No I checked the tube base, I wouldn't be surprised if its not because the emission of the CRT has dropped but didn't want to rejuvenate as this is very short lived
Those dreaded slide controls, they date sets to the mid 70s
and I resisted the urge to spray servisol in as a week later the whole thing would have no doubt disintegrated !
@@michaeldranfield7140 Take em apart and run an ordinary lead pencil along the tracks to repair them, you are right, spraying these with any type of cleaning oil will destroy them.
You moved the disk magnets while clearing, would this have any effect on the picture quality.
no , not picture quality, they are for picture centring or pincushion distortion, one or the other .
Wonder if it's worth giving the tube a re-gun? Not sure if that's still an available service. As you say the rest of the set looks in very good order.
Thanks for another great watch 👍.
Cheers
Pete' New Zealand.
There isn’t an available re-gun service. RACS in France closed some years ago. The nearest regunners are in the US.
@@stickytapenrust6869 Ah. That could make it trickey 🤔. We had two re gun service places here. Don't know if either are still in opertion, but would be a long way to send a tube here if they are 😄
looks like the philips chassis
weren't Pye and Phillips the same group in the end
@@michaeldranfield7140 They were indeed. Philips bought the old Ecko name so this also appeared on a few of their TVs.
I remember my father playing about with these old TV's ,then I saw the mullard sticker and I remembered that name from back in the day 60yrs ago now so just googled it and it looks like it they were something to do with crts and tv repairs? But couldn't get open their advert ,it looks like someone's accusing them of some dodgy dealings and they have shut down their link,that apart thanks for the vid👍.....
mullard was once a world famous company who started off making valves, then moved onto CRT s , semiconductors, TV tubes and electronic components, although well gone now most of there stuff is still very highly regarded and some audio valves sell for large amounts of money on the internet.
@@michaeldranfield7140 I have an HMV 1960 VHF radio with some Mulard OC170 and OC171 transistors which are still going strong. They were the first transistors manufactured in the UK that could work up to around 100MHz.
Is this one of the last of the large screen monochrome TVs?
Not quite. There was the Thorn 1615, a Portuguese-built Pye and a Cap10-branded Samsung all in the early-mid 80s.
There was also a 20” Grundig that I’ve got in my collection… somewhere!
getting up that way for large screen but I think production of small screen portable back and white sets continued till about 1985 ish , they were popular as second and bedroom sets
wonder how many LED tv's will still be working i48 years from now
My guess is next to none. I can see two main reasons: the conductive glue that connects the COF drivers to the LCD panel will probably fail within a few decades, second: data retention time of modern flash memories is 5-20 years. So at 40 years, most of the sets will have corrupted firmware. Unfortunately the same is true to modern test equipment, and everything that uses flash memory.
@@mrnmrn1 The Sony android sets seemed to be the worst suffering from corrupted firmware, see it quite often
Probley none, especially with lead free solder and all software driven and of course not forgetting built in obsolescence , a way of making you replace your TV .
@@andrewwalsh5837 I have a Sony DVD recorder from ~2006-2008, in which the firmware got corrupted in about 2019. I bought it cheap with the fault of boot looping, managed to do a factory reset through the service menu, it worked for a day than started boot looping again, and the service menu is not accessible anymore. I should buy an other one from that same model with a dead drive but working firmware, and copy the flash chip.
Are you teaching any youngins your craft
sadly not, no one in there right mind would be going into TV repairs now , were in a disposable world, even the city and guilds qualification in TV servicing no longer exists, due no doubt to lack of demand.