UMC TP. MSD309.BP76 Power supply blow up repair to component level.
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- Опубликовано: 14 июл 2022
- A short video to document a component level repair to a UMC brand PCB from a Blaupunkt 39 inch LCD TV.
UMC , Universal Media Company is a major supplier of cheap TV sets and now owns the Sharp brand among many others.
Reference number on the board is TP .MSD309 .BP76. 
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great to see another set back in use. hopefully right to repair will make service data compulsory in the future.
i dont think its too much to ask for service data, all this could now be published on a website for next to nothing ,I would like to see manufactures forced to do this or be closed down ,
@@michaeldranfield7140 I completely agree and I think the law will change to force the issue. We can't keep throwing things away and I can see a future where your skills will very much be in demand again.
Nice work.
Great to see, So refreshing someone actually repairing and not board swapping.
Ordering parts because it's easier than looking through stock - Man after my own heart :)
I often do that.
As to incorrect SMD size ordering, I think most of my spare stock was sourced in that way lol
UMC dont supply any parts , not even a new board so repair or used board if you can find one is the only option.
Its not unusual for me to order something I already have because it either takes to long to look or I know I have it but cant remember where I put it !
I need to get more organised but all this takes up time and organizing doesn't make you a living .
Thank you Michael, lots of useful info for us home repair enthusiasts. I did not know about the PFC system check trick, very useful to know.
I’ve only been watching your channel a few months but I really like your style. I have my own lab in business also but I specialize in test equipment and metrology stuff for industrial folks. Component level stuff and a bit of calibration. I really like how you explain things and friends/clients always seem to be bringing me stuff that isn’t involved with business. Just electronic stuff in their life that breaks like TVs or want me to look at the motor controller or something. So content like yours really helps me because I feel like that’s outside my wheelhouse of understanding. So I learned a lot watching you. I might fix and calibrate a $200,000 oscilloscope for some lab on Monday, but then Tuesday can’t figure out mid 2000’s plasma TV. Your videos have helped a lot with that type of stuff and I enjoy working on it even though it is just usually as a favor or some thing. Sometimes it’s nice to work on things that aren’t so critical and that people actually use every day.
Glad you like the content, I try to cover things other people haven't wherever possible, I do sometimes get stuff I don't usually work with, such as car ecu s, industrial equipment, people seem to think because I'm an electronics engineer I can repair anything.
This might be the first time we have seen you without a jumper/cardigan LOL Nice repair MD, a lot of people would have gone for a replacement board
My place is so well insulated even today its very cool inside hence the use of jumpers, had the door open all day trying to get some heat inside, UMC don't supply any spares at all so repair was the only option.
Wonderful and educational. Thank you for sharing. Hello from USA
No problem , thankyou for watching .
A very beneficial bit of info!!!
Glad you liked it .
Could watch your videos all day great work.
And If I had time I could make videos every day !
Great 👍 thanks a lot this is one of great lessons I learned from you Sir.
No problem , many thanks for watching.
Good tip about the PFC circuit "is it working" check. Enjoyed watching.
Glad you liked it UMC don't supply any spare parts at all, not even new boards so repair is the only option .
Ah, Blaupunkt, a Sainsbury's special! Would you believe, I always thought they were made by Vestel.
I can only say I wish I had your depth of knowledge, because I'm sure I could have saved dozens of the economy brand tellies.
I think UMC is Vestels biggest competitor but personally I prefer vestel for there better layout , the UMC stuff always looks a bit thrown together and spare boards can be bought for vestel sets , UMC dont supply any parts at all ,but having said that UMC will send you software , where as Vestel will only supply software for a few brands, swings and roundabouts I guess, but what's not that commonly known is vestel is over 25 years old and use to make CRT sets.
Whats in a name these days just made cheaply and badged up
@@pauldavies6037 Problem is not everyone knows its just a name .
@@michaeldranfield7140 Yes been like this for a long time Branding with a well known name sells more to the general public even though made by somebody else
Great fix Michael, I hate them boards lol 😂 very common failure the pfc circuit is rubbish
Im no big fan of UMC myself , Vestel is far better made .
@@michaeldranfield7140 totally agree Michael
I really like your work, so it's always like from me at least.
Many thanks for that , glad you like the videos .
another great video keep them coming.
More on the way , soon !
Many thanks for watching .
Great. Very informative, I had the exact same problem. well thank you
That's a key phrase, "Order or look for". I've a loft full of "that'll come in handy" PCB's
I know , bought 100 surface mounted fuses once and a week later couldn't find them , that was about 3 years ago and they've never been seen since .
Another great video, I am really enjoying watching your channel. Some of the equipment I see you use and have my father had in his radio and TV repair. I still repair electronic items, mainly bespoke power supplies and the odd bespoke LCD monitor for instructor stations on board full-motion flight simulators. I do like your TV test stand, I'm looking for something like that, did you make it. Like to see a video about it or have you done one.
Blaupunkt made excellent car stereos, unfortunately these televisions are thrown together with factory floor parts and theyre nothing to do with Blaupunkt, just looking at this and you get a strong wiff of chineseum, my sony bravia 32in lcd is still working perfect after 16 years, these sets you would be lucky if they last 16 months
so true, Blaupunkt blue spot was a top German brand 30 years ago , now its like most sets on the market, nothing but just a name .
@@michaeldranfield7140 The only way to stop this is to stop giving these chinese people our money! the word "copyright" means nothing in china, theyve even copied our cheshire built rolls royce cars and austin mini from the 80s, dont know how they keep getting away with it to be honest, its bloody terrible.
Great fix
Many thanks for that .
Very good MD I enjoyed the video ,my only thought is it worth repairing ,I purchased a 32" smart JVC (VESTEL) the other day for £150 with a 3year GT I know customers like what they are use to but at what point is it BER. Just a thought .Thanks again Steve.
I know what your saying and this job would have been a simple run of the mill 15 minute repair if there was a service manual and access to spare parts from the manufacture, but instead I have to trawl the net to see what the chip is , check with 3 different suppliers to find which one has all the parts I need so I can do just one order, then I had to find a similar board to see what the missing resistor was and what value the 0402 resistor was which is so small it has no numbers printed on it , so no, the set wasn't really worth repairing in the current climate but component level fault finding is what I have always done and I still enjoy the challenge !
And the environment says: it’s absolutely worth repairing it. Kudos to you for keeping another piece of otherwise perfectly fine gear out of the landfill, because the cost of that is ultimately much higher! We need to have legislative action for manufacturers to provide service manuals for their gear!!
@@toolsarecool I get a lot of sets with easy faults like this I have to scrap simply because there is no service manual and I cant identifie a part but in this case I had another board from a similar set so was able to measure the resistance values .
good job
Many thanks for watching.
Hi there just watch the video on the tv with a blown up power supply you ordered loads spare parts but you do not show on the set and which 1 do you eventually changed it just seems hard for us to do the same job when we do not no which ones you changed thank you
without a circuit diagram its just a matter of testing every part in the power supply with a mulitmeter , pay special attention to the surface mounted resistors , some may have to be removed to get a proper reading .
Clear video, as always. What would this repair cost? It always seems like the labor alone would be worth more than a replacement set, which is incredibly frustrating.
i charged £50 , its not the labor thats the problem , this would have been a simple straightforward 15 minute repair if there .was a service manual with schematic available
@@michaeldranfield7140 right! It's the time spent figuring everything out (for me at least)
That was more than reasonable Michael
@@kendom33 you cant charge by the hour anymore you just have to charge what you think the customer will pay or they would just buy a new set and i would get nothing at all.
@@michaeldranfield7140
Therein lies the problem -
Manufacturers now mostly produce low-cost devices -
There are only three major manufacturers in CHINA that
manufacture most brands - including various 'House Brand'
devices -- and Service Manuals are near impossible to obtain.
The devices are not designed to last more than 3 or 4 years
and often fail within the first 24 months - largely because of
poor quality and under-rated components.
As for repair - keeping a supply of components is not only
costly in storage space as well as storage system i.e. (bins)
but also the financial investment -
Parts management - meaning unless one keeps a database of
where the parts are located - searching for them can be time-consuming -
Also maintaining a database takes time.
Test equipment and tools - maintenance and replacement costs are
high - Energy costs keep increasing - and also insurance is critical.
Operating a business has high expenses and 98.7% of the population
do not comprehend - particularly when the business revolves around
any Technical - Medical - Mechanical Service
These are all High-Risk Businesses --
** AND as an observation - someone at FARNELL does not know how to SPELL the word BUSINESS -
-or it may simply be a TYPOGRAPHICAL error.
£50 is equivalent to -near enough $89.00 Australian Dollars -
That is quite low cost as the value of the repair is double that amount.
you do good videos.. i have a 39 inch umc, i got it in 2011 still works and still old enough to have ccfl backlight, all my tvs are ccfl backlight i dont have any led tvs.. bet they stopped making ccfl backlighted tvs because they was lasting too long
The death of CCFL was the power consumption but as you say the longevity of CCFL will never be matched by LED backlight, I hardly ever use to see CCFL failure but LED failure is now by far the most common fault with some sets not even reaching 5,000 hours use before the LED s have failed.
Give me CCFL any day over LED .
@@michaeldranfield7140 Interestingly, I have an old Samsung TV with about 24'000 cumulative hours of use. Apart from a slightly 'sepia' tint, it works perfectly.
@@michaeldranfield7140 A long time ago i converted a failed ccfl to led, it was one of those with the tubes at the sides of the display. I used led strips meant for some other purpose from a well known auction site. It was not worth doing, more of a project & not as bright as i had hoped.
@@Chris558576 if you dont try something though you never now how good it will be .
Hi, i have a problem with my board too, can you tell me the values of CB205 and R215? Thank you. From Portugal.
Sorry , not now , this repair went back a long time ago.
Thank you for answer me. Greetings.
That damage tells me one thing, BAD DESIGN. Not difficult to design a PSU which doesn't drop it's guts when something goes pop.
And use of poor quality capacitors does not help.
You got a motherboard for a tp.msd30976 main pcbfir jmb 50/1491-gb-5b2-fhkup eu
Doubt it but I will have a look tomorrow .
Was RB217 a 1206 package?
Indeed it was , I made a mistake writing it down and put 1202
@@michaeldranfield7140 keep up the excellent work Michael, You are doing the community a great service i also recommend Shango066 channel 👍
@@ikeabuchi1 Many thanks for that I will take a look .