Hello, I don't know much about TV repair, but I learn fast. My plasma 42" tv started to gradually go black. I don't know the boards names but does anyone know why the tv would do that. It has sound but within a couple of weeks some areas would be black then gradually be normal. Now its totally black. Help?
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Re: Sanyo DP42545
Well the dimming is usually caused by the Z/X sustain (the right power looking board). The black areas I'm not sure. No picture is caused usually by the Y sustain (left looking power board) though in some cases X sustain has been a culprit of that.
Does the screen seem to have a glow about it although black when on? -
Re: Sanyo DP42545
Typically only some parts of the plasma panel work when the Z-sustain fails so you can get uneven "blobs" across the picture. Sometimes, a failing Vs voltage can cause a dim picture, too.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Sanyo DP42545
Hi, I have a Sanyo DP42545. My TV functions ok for a short time, about 20 minutes, until it warms up I guess, and then the picture starts to go crazy. Green blobs, and static, and then after about 1/2 hour the picture is unrecognizable. I was hoping this would make sense to you and you could give me some advise on what part I would need to fix it.Comment
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Re: Sanyo DP42545
Hi all,
If anyone on this forum has the stand (legs) for Sanyo DP42545 to spare please let me know.
ThanksComment
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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?
Thanks,... -
Hi, I was wondering if there's anyone here with experience on the LG50PJ350 plasma or similar models? When it came in, it had 7 shorted mosfet outputs on the Y-sustain board, Q02, 04,11, 22, 24, 26, and 28 were all dead shorted. I replaced them with the exact same type, checked their surrounding area for other open and shorted components and didn't see any further problems. But as soon as I hit the power button on the remote, I had a loud Pop! and Q22, 24, 26, and 28 are shorted out again. The other 3 seem to have survived. Someone on another forum had suggested the possibility of a shorted panel.... -
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... -
Hello,
This Macbook does not turn on:
The power button is ripped, I received it like this and the machine was working fine with a ripped power button as boots when plugged in.
Current state:
When plugged in the USB meter goes to 20v /~0.5 gradually increasing to 0.7a charging for 10s then resets charging but remains at 20v, current draw drops to around ~40/50mah then restarts a second later looping.. all 4 ports are the same.
The touchpad responds (vibrating when pressed) but also is cycling on and then off.
PP3V_G3S...
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