I subscribe to a bunch of channels, but yours is by far the best. Straightforward, no extra blather, and clear explanations about cause of failure and method of repair. Thank you.
Scott, comments like this is really appreciated. I try and keep things as simple as possible without all the drama and clown acts. Thank you very much,
your right buddy i didnt see them when i put the cover back nice catch,im also glad i did this myself for the first time.like i said the 3 trimmers were testing out fine i just never thought to look there for why the one would not tune.i will in the future,another radio saved.thanks buddy
Excellent trouble shooting, Buddy. I learn some new things every time I watch your repair videos. Thank you and keep up the good work! 73 DE K7RMJ Frank
Gotta agree with Gary. They're all good. Easy or hard. Nice to demonstrate other techniques of trouble shooting if you don't have access to a lot of test gear. Before I had a good quality tube tester, substitution was my only way to go. It was almost never a tube though, always those darn caps and fried resistors. ATB Doug.
Thank you Doug. I like to show the simple ways when doing repairs. Not everyone has a shop full of gear. I remember way back I did not have a tube tester or a signal gen. Had a analog voltmeter, a watt meter, and a soldering iron. That was it lol. Thanks for watching my friend.
Nice fix Buddy...you let the cat out of the bad early on about the loose ground (probably an editing thing). Always great to follow along and digest your troubleshooting process.
Yep, that was a issue of trying to multi task. Watching the twins, cooking on the Barbie, and editing a video. That clip was to be later at the end. Glad you liked the troubleshooting my friend.
Absolutely amazing video only 5 minutes in and extremely surprised. Just purchased one of these yesterday. I only hear anything on FM mode. I downloaded the service manual. When I get home today I'm going to open her up and try to start troubleshooting
Another superb troubleshooting video, Buddy. I particularly like the way you go back and forth frimom schematic, to the chassis, to the symptoms, and to your test equipment readings -- explaining as you go your thinking, your logic, and your troubleshooting process. To me you tell it like a detective story, and I stay glued to the screen from start to finish. Cause I don't want to miss one word of what you're saying, and as another viewer said, I ALWAYS learn something new from your videos. As someone else noted, I am glad there is little or no blather or tricky special effects in your vifeos. instead I find yourtiming and apprioriate use of humor to be perfect. I subscribe also to anumber of channels, but yours by far is the best! Many thanks, Buddy, for teaching us how to keep our vintage electronic and ham radio gear working and in tip top shape. Tom KE4RHH
Tom, Thanks for that very touching reply with the kind words. These are the type of replies that rewards me from the time I take to produce these videos. Some of my friends that are not into electronics says my videos are sort of dry. I try and keep things on a serious note because I do not want my videos to be about me, but about folks learning simple things in electronics. Thank you again for the kind words and glad you like the format. 73 Buddy
some times it turns out to be easy as it can be :^) Good job Buddy and good eyes...Thanks for mention always a pleasure to stay in contact..Take care my friend
What a beautiful classic radio brought back to life. Really nice video, Buddy. Thank you for posting this one. I have a question, what would cause those board pins to be unsoldered like that? Mel
Hi my good friend. Yes always nice to bring the classics back to life. The reason for the missing solder is there is a metal shield soldered to the bottom of the vco section. To gain access to the trimmers you have to desolder the shield. Problem is there are also component leads on the same ground path. So when the owner reinstalled the shield he did not notice the leads . Thanks for watching Mel.
I have been watching your videos for some time now. Very informative and I'm learning quite a bit. Been a ham for near 40 yrs and like and use older equipment so learning to maintain the older stuff is a valuable skill! I'm curious....I've a friend with a 735 and he says the rx audio is distorted only on 20 meters. Cannot tune a signal to perfect clarity only on 20. Seems I read somewhere that may be related to just what you're dealing with in this video. Is that correct? Thanks Wayne n4eyz
Hi Wayne and glad you enjoy the videos. I try my best to explain things in normal speak so everyone can follow. Yes it sounds like he has trimmer problems on his 735. Best to replace all four VCO trimmers and the local oscillator trimmer. Hope that helps.
Yes Buddy very good video and know how easy that mistake could happen in good reasons, seen many PAD joints having other components on them thru hole, thinking in mind getting cover off and looking first at the area weather the soldier pads.Boy that bench looks great with the RIGOL lol lol Notice Left hand moving lil better !!! Keep them coming Buddy I sure Enjoy them.As always 73's/GB
@ the radio Shop. A friend of mine has an Icom IC-735 since 2004. We installed the antenna and tested it a year ago and after about 15 minutes, it started scanning frequencies all by it self and loop it self on it. I am not sure if you would happened to have time to work on it? PM me if you are interested on working on it.
I have one of these rigs and I was wondering if you might be able to answer a few questions about an issue I'm having with it. The very bottom of the LCD display isn't showing the bottom segments of the numbers in the frequencies. I'd love to get it working but my electronics knowledge isn't this advanced, nor do I have the proper equipment to check all the things that needs to be checked. If I just had some idea of what could be wrong with it, I might be able to fix it. Any help would be greatly appreciated.
My ic-735 was normal and started to have a problem with reception. Some days it worked normal. The smeter indicates a lot of signal but I don't hear the stations or I hear very low. I disassembled the radio and found a lot of cold solder. After redoing the welds and assembling the equipment, the reception did not return to normal. Is there a specific component that I could test?
DENNIS N I accidently sent it to him one time I was sending him some goodies. It was stuck to something and I didn't notice it. I got them at Radio Shack believe it or not. They sold a neat little mini probe adapter set that contained a red and black magnetic probe. I liked the kits so much I bought something like 8 sets.
Rats! RS out of business and I'll be looking for a set of those magnetic probe add ons! BTW, RS Online is still selling out the last of their stock, bought a bunch of parts bin fillers from them today.
Dino Papas Yeah it's a shame to see them go. They did have a half way decent selection of parts. Twords the end they were turning into a cell phone store. :-(
@@TheRadioShop Hi i worked it out not long after commenting. You know when you spin through the bands and you get a split second dead spot its that but because I had the fine tune button in for the last digits it dragged it out into gaps.
What color would be better? I have tried many colors and most are unreadable, the new software I am going to be using in the future will fix this problem. Thanks for your feedback.
I'm not complaining personally, but as general advice I would suggest black or white text (as appropriate for the lightness of the background) with a white or black shadow/glow effect (or outline). The shadow increases the contrast at the edges of the text and reduces interference from the background's color/texture. You can see lots of examples of this technique on book covers to make title/author text pop above the cover image.
I have tried that with my editor and it never looks right. I am however getting away from WMM and going to a better program I hope. I am currently trying Shot Cut as an editor. Still in the learning stages. Thanks for the feed back on this.
I subscribe to a bunch of channels, but yours is by far the best. Straightforward, no extra blather, and clear explanations about cause of failure and method of repair. Thank you.
Scott, comments like this is really appreciated. I try and keep things as simple as possible without all the drama and clown acts. Thank you very much,
Your thought process and deductions based on testing is nothing short of fascinating. Thanks Buddy👍
Gotta love those easy fixes. I need to get off my hind end and get my Icom packed up and sent off to you.
Thanks Jon and when ever you are ready.
Finally got an easy one. It's nice to get them every once in a while.
Yes!. Did not have to pull any hair out or bang my head on the bench.
your right buddy i didnt see them when i put the cover back nice catch,im also glad i did this myself for the first time.like i said the 3 trimmers were testing out fine i just never thought to look there for why the one would not tune.i will in the future,another radio saved.thanks buddy
Well it is working now. Sent you an email. Good job on the trimmer install and alignment!
easy or hard ones we love the amount of detail u put into every video Buddy. This one is superb as they all are. Thanks Buddy.
Thanks Gary. I always enjoy the easy one, Thanks for the positive comment my friend.
Excellent trouble shooting, Buddy. I learn some new things every time I watch your repair videos. Thank you and keep up the good work! 73 DE K7RMJ Frank
Thank you Frank. Glad you can learn from this old dog. Appreciate the nice comment my friend. 73 Buddy
Gotta agree with Gary. They're all good. Easy or hard. Nice to demonstrate other techniques of trouble shooting if you don't have access to a lot of test gear. Before I had a good quality tube tester, substitution was my only way to go. It was almost never a tube though, always those darn caps and fried resistors. ATB Doug.
Thank you Doug. I like to show the simple ways when doing repairs. Not everyone has a shop full of gear. I remember way back I did not have a tube tester or a signal gen. Had a analog voltmeter, a watt meter, and a soldering iron. That was it lol. Thanks for watching my friend.
Nice fix Buddy...you let the cat out of the bad early on about the loose ground (probably an editing thing). Always great to follow along and digest your troubleshooting process.
Yep, that was a issue of trying to multi task. Watching the twins, cooking on the Barbie, and editing a video. That clip was to be later at the end. Glad you liked the troubleshooting my friend.
Absolutely amazing video only 5 minutes in and extremely surprised. Just purchased one of these yesterday. I only hear anything on FM mode. I downloaded the service manual. When I get home today I'm going to open her up and try to start troubleshooting
Thanks for watching
Another superb troubleshooting video, Buddy. I particularly like the way you go back and forth frimom schematic, to the chassis, to the symptoms, and to your test equipment readings -- explaining as you go your thinking, your logic, and your troubleshooting process. To me you tell it like a detective story, and I stay glued to the screen from start to finish. Cause I don't want to miss one word of what you're saying, and as another viewer said, I ALWAYS learn something new from your videos. As someone else noted, I am glad there is little or no blather or tricky special effects in your vifeos. instead I find yourtiming and apprioriate use of humor to be perfect. I subscribe also to anumber of channels, but yours by far is the best! Many thanks, Buddy, for teaching us how to keep our vintage electronic and ham radio gear working and in tip top shape. Tom KE4RHH
Tom, Thanks for that very touching reply with the kind words. These are the type of replies that rewards me from the time I take to produce these videos. Some of my friends that are not into electronics says my videos are sort of dry. I try and keep things on a serious note because I do not want my videos to be about me, but about folks learning simple things in electronics. Thank you again for the kind words and glad you like the format. 73 Buddy
Excellent explanation
Glad you liked it
some times it turns out to be easy as it can be :^) Good job Buddy and good eyes...Thanks for mention always a pleasure to stay in contact..Take care my friend
Thanks Peter for the email also. I had thought this was really going to be a tough one. Lucky this time. Thanks for stopping in my friend.
Nice one buddy as always top notch repair big thumbs up
Thank you very much allan.
Another good job I don’t expect anything except a good job from you you do very very well enjoy watching you God bless k1emw
What a beautiful classic radio brought back to life. Really nice video, Buddy. Thank you for posting this one.
I have a question, what would cause those board pins to be unsoldered like that?
Mel
Hi my good friend. Yes always nice to bring the classics back to life. The reason for the missing solder is there is a metal shield soldered to the bottom of the vco section. To gain access to the trimmers you have to desolder the shield. Problem is there are also component leads on the same ground path. So when the owner reinstalled the shield he did not notice the leads . Thanks for watching Mel.
Whoever did the first Trimmer change forgot to re-solder those pins after sucking the solder to get the shield off..... good repair.
Yep, simple mistake. But was easy to find :) Thanks for watching.
Good work Buddy always good to learn something new. Thank You
Thank you Wayne.
I have been watching your videos for some time now. Very informative and I'm learning quite a bit. Been a ham for near 40 yrs and like and use older equipment so learning to maintain the older stuff is a valuable skill! I'm curious....I've a friend with a 735 and he says the rx audio is distorted only on 20 meters. Cannot tune a signal to perfect clarity only on 20. Seems I read somewhere that may be related to just what you're dealing with in this video. Is that correct?
Thanks
Wayne
n4eyz
Hi Wayne and glad you enjoy the videos. I try my best to explain things in normal speak so everyone can follow. Yes it sounds like he has trimmer problems on his 735. Best to replace all four VCO trimmers and the local oscillator trimmer. Hope that helps.
my main rig is an ic735... and yes it still has the door on it.
Very nice. Don't know how many I have seen at field day missing the door.
Yes Buddy very good video and know how easy that mistake could happen in good reasons, seen many PAD joints having other components on them thru hole, thinking in mind getting cover off and looking first at the area weather the soldier pads.Boy that bench looks great with the RIGOL lol lol Notice Left hand moving lil better !!! Keep them coming Buddy I sure Enjoy them.As always 73's/GB
Thanks for that email Dale. Nice looking set up. Thanks for sharing that. Yes this was one easy one this time.
I join Your Electronics universe page, Plus left you message , question on gear ..73's Buddy
Good job, Buddy. Well spotted.
Thanks Chris
Good catch Buddy.....Sharp eyes.
Thanks. Was lucky on that one. Always a pleasure to see you stop in.
Do you repair radios for other people?
What desoldering station do you use?
Also- Is there an in-circuit capacitor ESR tester you trust?
Thanks!
@ the radio Shop. A friend of mine has an Icom IC-735 since 2004. We installed the antenna and tested it a year ago and after about 15 minutes, it started scanning frequencies all by it self and loop it self on it. I am not sure if you would happened to have time to work on it? PM me if you are interested on working on it.
Hi, could you tell me where did you buy trimmers capacitor that you are used ? Thanks in advance and compliments. 73s Pasquale IW0HEX
Got them from Icom America.
@@TheRadioShop Tnx. I have seen them in RF-PARTS too. Regards and thanks for your answer. 73s Pasquale IW0HEX
Yes you are correct. Thanks
I have one of these rigs and I was wondering if you might be able to answer a few questions about an issue I'm having with it. The very bottom of the LCD display isn't showing the bottom segments of the numbers in the frequencies. I'd love to get it working but my electronics knowledge isn't this advanced, nor do I have the proper equipment to check all the things that needs to be checked. If I just had some idea of what could be wrong with it, I might be able to fix it. Any help would be greatly appreciated.
My ic-735 was normal and started to have a problem with reception. Some days it worked normal. The smeter indicates a lot of signal but I don't hear the stations or I hear very low. I disassembled the radio and found a lot of cold solder. After redoing the welds and assembling the equipment, the reception did not return to normal. Is there a specific component that I could test?
Buenos días podría poner un video de fincionamiento de Maxon 4800
Great repair,where did you get your mag probes from.. thanks Buddy
DENNIS N
I accidently sent it to him one time I was sending him some goodies. It was stuck to something and I didn't notice it. I got them at Radio Shack believe it or not. They sold a neat little mini probe adapter set that contained a red and black magnetic probe. I liked the kits so much I bought something like 8 sets.
Rats! RS out of business and I'll be looking for a set of those magnetic probe add ons! BTW, RS Online is still selling out the last of their stock, bought a bunch of parts bin fillers from them today.
Dino Papas
Yeah it's a shame to see them go. They did have a half way decent selection of parts. Twords the end they were turning into a cell phone store. :-(
Thanks Dennis. Mike below answered that questions.
I would love to find some more of those. Work great. May have to make some.
Buddy I really enjoyed this one thanks.
would you happen to have a replacement bulb for the ic740 signal strength meter?
I will check my stock.
Another great video!!!!
Hello I hv a old 735.
It doesn't transmit , on receive i get only squelch no stations. Any solution ?
I had a problem on my 735, (warble) turned out it was the power switch.
Original trimmers were 6.5v easily.
Digi-Key Part # EG1018-ND
Thanks!
Hello I have a ICOM 735 that has an audio Problem the FM works, but no Sideband, and no AM? I need a technician that will be willing to fix it.
I was just given a non-working IC-735...wish me luck!
some times its soming simble ricks radio shop
Very well said.
Hi I get frequency gaps in mine what is the cause of this .
Regards nick
Have you tried a reset?
@@TheRadioShop Hi i worked it out not long after commenting.
You know when you spin through the bands and you get a split second dead spot its that but because I had the fine tune button in for the last digits it dragged it out into gaps.
Please don't use red color for text in the vidoe. That is very hard to read.
What color would be better? I have tried many colors and most are unreadable, the new software I am going to be using in the future will fix this problem. Thanks for your feedback.
I'm not complaining personally, but as general advice I would suggest black or white text (as appropriate for the lightness of the background) with a white or black shadow/glow effect (or outline). The shadow increases the contrast at the edges of the text and reduces interference from the background's color/texture. You can see lots of examples of this technique on book covers to make title/author text pop above the cover image.
I have tried that with my editor and it never looks right. I am however getting away from WMM and going to a better program I hope. I am currently trying Shot Cut as an editor. Still in the learning stages. Thanks for the feed back on this.