SOURCE: LG PLASMA 42" TV MODEL: MZ-42PZ14 ABLLKS
Check the fuse on Y Sustain Board. If the fuse was gone, replace that board.
SOURCE: My Samsung plasma 42 "
I had a similar problem with my 42 in Philips LCD HDTV. Here was the problem. My Power Supply Board had several bad capacitors. I opened my TV (warranty was expired of course) and found four bulged capacitors on the PSB. Many major electronics companies Philips/Magnavox, Sony, Panasonic, and others were sold capacitors that failed in 2-5 years instead of 10-20. The capacitors fail prematurely due to a lack of preservatives. Unfortunately, they were installed in all sorts of devices and cause a wide range of failure problems. Here are some options for you. 1. Have it fixed by a professional $$$$$$$??????? (Is it under warranty?) Remember, TVs CONTAIN HIGH VOLTAGE AND CAN KILL YOU! Do this at your own risk. 2. Open your TV and find PSB. (The board that the power cord plugs into) Check for faulty caps. If you find some (bulged or leaking) bad caps replace the entire board. The entire board costs around $250 right now because they are in high demand right now. They can be found online. I would definitely shop around though. 3. Remove and then replace individual faulty caps. This takes some soldering skill. Caps are inexpensive and if you can take care of it yourself it will save you hundreds. This may be your problem. If you determine that it might be. I have a Tip/How TO tutorial on this site that may also help. It gives step by step instructions for replacing caps on PSB #715t2432-2. If this is your board you are in luck. Here is the Link: Fixing the Philips Turns/shuts off on its own problem. I'm working on uploading pictures to help guide people though the process as well. Let me know if I can do anything to help. Hope this helps and if it does please rate it accordingly. Good luck.
SOURCE: I have a Samsung 42 " Plasma Model no: PS42Q96HD.
Hi,
this could be a problem with the power supply in the tv, it is common especially on some Samsungs
and specific repair kits are available quite cheaply if you have good
soldering skills.
Usually this is caused by capacitors that have
dried up and split, you can normally tell as the capacitors are bulging
on the pcb, you can get them in a kit as I said eBay sometimes do them
or you can buy them indivually from a good electronics components
supplier, make sure you get the correct values for each!! marked on the
side of the capacitors in xx/x V, xxx/x uF and 105oC. (the x's represent numbers)
The picture
below shows the type of theing that happens, the brown ones are
bulging/split on the top whereas the black one is fine.
High Voltages can exist in these sets, never attempt anything while plugged in and
if in doubt do not attempt it yourself and seek the advice of a qualified TV Technician.
SOURCE: Samsung 42" Plasma #SPR4212X/XAA TV was
Hello
In normal casses, if the power supply regulator board of Plasma Ts cannot be get repaired by any means. The inverter transformer [Switched Mode Power Supply]; will get shorted windings inside it, which cannot be retifed. this is a critical part, that cannot be available at local electronic sparepart market, of as part at Samsung service center. it is best to replace it as card basis, as plasma power supplies must be very right in every respect for the proper working of the plasma TVs. Thie is quite normal case also, that unlike LCD power supply sections, plasma power supplies will get troubled soon, as it supplies more current to the plasma screen to illumitate. Just replace it. You can get it from the Authorised Service Center for Samsung at your town. It will solve your TVs problem. The oscillating frequency of the switched mode power supply of this model of TV you owns have [350kHz] a very high frequency than normal LCD or other Samsung power sections. It will have a high stability, which cannot be accuired by normal service techniques, and components in it will be of special type. OK.
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