Problem was first: TV would not power up. It would appear to be powering up and connecting to a channel only to go dark and power off. The local "parts re-placer" shop said it was the power supply and replaced that. Then they said it was the main board but it was not available to order. When I opened it up the new (?) power supply was not even connected. When I connected it, something smoked in our near the lower transformer. Is it worth trying to get a main board or is it trash?
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Re: RCA Mod# L42WD22
Did you get your old power supply board back - if not can you?Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740 -
Re: RCA Mod# L42WD22
Sounds like a tech shop who wanted to scam you?
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: RCA Mod# L42WD22
If you decide to do something with it this thread might have some info.
https://www.badcaps.net/forum/showth...987#post255987Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Good day everyone,
Let me preface this with letting you know that I have a smalltime computer repair shop but do not have a lot of experience when it comes to board diagnostics. I am good at soldering etc but finding the issue if there isn't an obvious burnt component is not my strong suit.
The other day I got a customer come in with a macbook A1990 (motherboard 820-01814-A) that would not turn on and had previously been getting the warning message that the battery needed servicing. (Most folks seem to ignore that message, just like the check engine light in vehicles.)... -
This was a no power initially. Thanks to your help, I discovered it was the first mosfet, so I replaced. Now, the device will power up only if the battery is NOT connected. As soon as I connect the battery, it shuts off. If I connected the battery while the device is off, it simply will not respond to the power button. I replaced the battery, and while I suppose the new battery could be faulty, I'm assuming it is not. I'm having the same behavior with the new battery. I measure .2v at the charging coil. Manually applying power to the + and - at the battery header, there is no charging happening....
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Ok so this doing my head in and hopefully someone more knowledgeable will be able to assist.
I've got a MacBook Pro 820-2915-A it will power on without the battery connected, but when the battery is connected it will do a 2,3-second fan spin when pressing the power button and then nothing.
After measuring and probing around I found that R7051 was bad, reading high instead of 2.2Ω so I replaced it. Still the same issue, I have the green light on the charger but it won't power on or charge the battery.
So to cut the long story short I've replaced U7000,... -
Hello. I have a problem with a PS5 console that I bought to learn electronics repair. The auction description indicated that the console had been dropped. The HDMI port and USB ports were damaged. The HDMI port was replaced by the previous owner, and after his repair, the console worked for 2 days and then became dead. After receiving the console, I replaced all the USB ports. After replacing them, the console started to turn on. On the logo screen, it displays "too many USB devices connected". My further attempts to fix the error involved replacing the Southbridge, 4 TPS2001D chips,... -
Hi, I want to ask for advice about an interesting issue I've been having with a sony vaio laptop.
Client came and said that "a desklamp touched the back of the lid while laptop was operating normally and it caused the office's circuit breaker to trip. Laptop had never turned on since".
After taking the laptop apart (checked dc adapter everythin ok), I found a faulty MOSFET on the motherboard which I replaced. Laptop managed to turn on. However, while booting it shut down. Nothing else seemed faulty and thermals were ok. Shutting down was coming at random...
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