Alright folks this is my first post so take it easy on me. I fixed my first TV from info I viewed on this site about a month ago for my sister and it went pretty smooth. It was on an LG and I found 4 bad 3300 caps and did my first solder job. I guess I got a little cocky because I bought a tv from someone that needed the money and couldn't wait to try to return it or call Sanyo. The manufacture date is from 4/11. I guess it only worked for about a month and a half and no it won't power on. I thought to myself "easy, I know the problem". I got the back panel off and all of the caps look ok. I pulled the pcb out and looked it over and I can't see any issues. I had the first 2 fuses checked and they are ok. Is there anything I should be checking out? I don't have any testing tools and don't know where to go from here. I get a green light to come on and hear the clicking but nother happens. No video, no sound, no back light. Any insight for a newbie would be greatly appreciated. Thanks!
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Re: 42" Sanyo from Walmart
Well, first of all, If the manufacturer date was from 4/11, I'd bet that the manufacturer warranty is still in effect. Don't void it at all. I'm shocked that the guy that sold it to you didnt think of that first.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: 42" Sanyo from Walmart
Welcome to the forum! Clear pictures of the power supply as well as the other boards would be a great help.Comment
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Re: 42" Sanyo from Walmart
I will get some pictures and more info about the tv on tomorrow.Comment
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Re: 42" Sanyo from Walmart
It would be unwise to not get this fixed through the warranty. Call Sanyo and they'll probably have someone local come out and fix it for free. If you dont have any tools, you're only guessing. Even the best troubleshooters need tools.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: 42" Sanyo from Walmart
If the original owner had the reciept I would try to get Walmart or Sanyo involved but the more I read about the trouble with this TV the more I realized I wouldn't get any help from either. Here are a couple pictures and I have had the fuses tested and they check out ok. The board and other pictures look identical to the ones that with the model # DP50740 that others have recently posted. I have also heard that once you have the back of the tv off that the manufacturer won't do anything for you. I went through and made sure everything is plugged in good and again I get a green light for about 10 sec. and then it starts to slowly blink if that means anything.Attached FilesComment
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Re: 42" Sanyo from Walmart
is there a blink pattern or it just blink?Comment
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Re: 42" Sanyo from Walmart
My concern was that there also would not be any parts to fix this TV available since it's somewhat new. Now that you posted the model number, I found a couple of cheap power supply boards on Ebay. Cheapest one is only $39 with free shipping. Since you don't have any testing tools I can only advise you to swap boards on best guess. At least the board is cheap.The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Re: 42" Sanyo from Walmart
I would lean toward one of the sustain boards. Since it powers on for ten seconds then shuts down and blinks I would say that the power supply is fine and there is a problem elsewhere that is sending a signal to the main board to go into protect. You will have to buy a meter if you don't have one already and test for shorts or other issues on the SC (Y-sustain)board and SS (z-sustain)board. It is better than blindly buying boards and hoping you get lucky. I have fixed a few of these Sanyo TVs with the Panasonic panels and each time it was a completely shorted SC (Y-sus)board or SS (Z-sus)board. Unfortunately, since it is made with panasonic components you will most likely not be able to find the transistors and mosfets to fix either board and will have to just replace the culprit board.Comment
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Re: 42" Sanyo from Walmart
Thanks for the advise. I am starting to think it isn't the power supply either and its just going into protect mode. Just to be clear, it doesn't power on for ten seconds, I just seem to get a longer green light and then it starts to slowly blink. There doesn't seem to be any kind of pattern to it. Just long and slow blinks. Are the sustain boards more or less expensive than the power supply typically?Comment
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Re: 42" Sanyo from Walmart
Typically less expensive but that is not always the case. Just to clarify my thought, if the green light is on then that means the TV is powered on regardless if the screen is on or not. The TV will then shut down and the light will blink.Comment
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The strong-minded rise to the challenge of their goals,the weak-minded BECOME HATERS
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Hey all
I've been working on a 1984 Sanyo 27" color TV which had a smattering of bad caps in the video switching circuit. I found this oddball little 1uF 25V cap which looks to me like an early polymer, but I can't find concrete info proving it. I know Sanyo was a big player in early polymer cap development and this is the time period where they were just getting on the market, so I'm wondering if anyone has crusty old datasheets that could help identify it and determine if my suspicions are right? It has the same epoxy end seal and font/formatting as some old stock Os-Cons I've got laying...
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Hey All,
I have a Sanyo DP5834 that did have an issue with the backlights, but I disassembled the unit and repaired the LED strips by resoldering all of the connectors. Now I've reassembled it and I have backlights and sound, but a grayish screen. I can tap on the screen and see that it's on, but no picture. All voltages seem to be correct on the power board.
Based on the LCD Flat panel TV troubleshooting guide by Bud Martin, I'm thinking the T-Con has failed because I'm getting 12v both into and out of FP1 on the T-Con. Am I on the right track?
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Hi again guys.
Today I have a problem with this Sanyo VCR.
I bought it online, It worked sometimes.
I recap the Power supply and it started working fine.
Image is perfect and all digital effects too.
All of a sudden it stopped outputting sound. I checked for dried solders an all boards and soldered when needed, no fix.
I have no sound on playback, on tuner, or aux in.
On symptom I noticed is when it was working fine, the HI-FI led was on when I power up the VCR, now is OFF, A-B leds are on but when I put a tape they go off.
On one of the sound processing... -
What type of caps can I use to replace these Rubycon (K) caps? Can I use a film cap? I cant find any aluminum electrolytic caps that go that low. They are .033 uf and .047 uf
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Hello. I have a Sanyo TV that had no backlights at first. I changed CS9 off the power supply and now the backlights will come on for a second or 2 and go right back off. I can see the image if I shine a flashlight in the screen. Anyone familiar with this particular model and problem, your help would be greatly appreciated. Thanks in advance....
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