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Sr6200 shorted out cap on main board still doesn,t work

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Lg 42px5d how do I test the main board for operation

Probably not main board but a short on the y- sustain board or a bad power supply

Feb 11, 2014 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

Orange light on vizio no bad caps

You may be buying a main board, only a few guys in the industry even bother servicing main boards. Outside of a bad cap, fuse, or regulator its time to replace the board. If you have standby power, and you're not getting the "PS ON" signal from the main board, your main board is bad!

Feb 08, 2013 | Vizio SV471XVT 47 in. LCD TV

1 Answer

Repair tips for plasma Y sustain board

Ah! if the short shows at the large input filter caps---put the bridge rectifier under a microscope (not literally).

That is in a package which actually contains 4 diodes--even if tests good and is mounted to a heat sink, unbolt it as I have seen a few (line voltage surge) fracture them on the rear--reads ok when set off but when power hits it at turn on it arcs over to the heat sink.

Just a thought--just keep looking if a short to ground--takes time but not usually a major part bad.

May 25, 2012 | Televison & Video

1 Answer

We have samsung LCD with 40r81b main board.The VGA cable was connected to Latop and due to short from laptop the VGA port and its surrounding diodes are blown.i have removed the shorted diode.but TV is not...

So the standby 5vdc is working but not the rest of the power supply outputs are working? Look for PS_ON signal (3.3~5vdc for ON) from the main board that feed the power supply board. You can tak ethe power supply moudule out the do bench test using 24v lamp attach to the 24vdc out put and feed the PS_ON with 3.3v to see if the 24vdc will turn on.
Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors pictures:
Learn about bad caps:

Capacitors kit: he can make you a set of caps.
Or, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.
I have a feeling that the main board is damaged since the protection Diodes are blown, it may have taken out the processor.

Jul 01, 2011 | Samsung LN-S4051D 40 in. LCD Television

2 Answers

The tv shut down and when i try to power back on i only get a flashing red light with no picture or sound. i checked the capacitors and they look OK as far as i can tell. what is my next option?

Replaced the tv main Tuner signal board it is shorted and dead.Tries websites like, to buy a whole refurbish tv Tuner signal board for the replacement.50/50 chances ur tv power supply board it is could be dead too.Power board capacitors components parts are not dead doesn't mean the tv power supply board it is good,could be those other components parts are dead too.U just don't have the know how and trouble shooting to find out how that all.

Jun 15, 2011 | LG 42LD450 42 in TV

1 Answer

1 long beep and 2 short beep

One long beep and 2 short beeps means that there is something wrong with your video. Open the side cover and make sure all cables are plugged in and also make sure your video card is seated all the way in. If it is on board video then it may be the drivers or the mother board. Check the main board for blown caps. The tops of the caps have an X cut into them. If this bubbles up then the cap is no good and the board needs replacing.

Apr 04, 2011 | Acer Aspire T180-EA350M (AST180EA350M) PC...

2 Answers

If the caps looks ok, what else should I look for before replacing the power board? Problem is turns on then turns off

Have you resoldered the Boards for poor Solder Connections?
Main Board will be the Problem if the Power Supply Board is OK.
Encompass parts Distribution 1-800-638-3328

Feb 15, 2011 | Televison & Video

1 Answer

I have a monitor with an Orion PWB-2022 chassis. The picture fades from left to right and also has vertical "jailbars". Changed C418. That was the only electrolytic cap found bad. No change. I have no...

In the CRT tube socket connected to the video board.Resolder that,changes all the caps on the video board around the main IC.That should solved the problems,not than ur main IC in the video board is shorted and dead.

Mar 26, 2010 | Televison & Video

1 Answer

Black screen on Zenith plasma tv's

Hello, My name is Dave and I can help you fix your Plasma TV. Give me a call. Feel free to give me a call @ 1-503-432-9904 or message me at

Thank you!


Dec 23, 2008 | Akai PDP-4247 Television

1 Answer

Marantz 6200

Your unit's micro IC, is in need of a reset.Un-plug the unit and locate the semi large yellow capactor on the main board. (r-h side facing front) Now flip the unit over and look thru the vent holes in that same area and locate the two solder pins. Short them out with a thin metal object, like a straightened out paper clip or wire, and turn it over (just discharge the cap and remove your wire) this will default all settings and restore normal operation.

Dec 03, 2007 | Marantz SR-6200 Receiver

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