Question about LG 50PC1DRA 50 in. Plasma Television

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Power supply, (+5v) went with puffed caps. TV is LG50PC1DRA aprox 3yr. I know I should have cleaned the dust from inlets!!! Where can I get a replacement? Pcb68709M0046A. Thanks, George Peters

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vinceisaac
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SOURCE: I have an LG 50pc3d plasma tv. I recently turned on my tv and it made a pop and then I had sound and then no picture. I have read on here to look for puffed up capacitors on the power supply and I fou

check for defective component part at the z and y sustain board.

Posted on Sep 08, 2012

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Lg 47 ld500 lcd tv wont power on


Not likely as you are hearing the main power relay click and it is after the fuse.

First place to look will be the power supply board inside the set--look for puffed up caps and or check voltages etc.


5_3_2012_2_44_29_pm.jpgcaps should have perfectly flat silver tops with no puffing up on top and no brown material leaking top or bottom.

May 03, 2012 | LG 47LD500 47" LCD TV

1 Answer

Mitsubishi TV, WD 60735; TV shuts off shortly after powering up.


It could be but a couple of other possible reasons---they had problems with this set and its brothers with caps in the main power supply puffing up and causing this "hard to turn on" issue.

A second reason is dust/dirt inside the unit.

All air is coming in via the front of the set and exits the rear--enough dust gets inside and the fans slow down or the lamp gets too hot and set shuts down---don't try this in the house: we take them with back cover off outside the building (on a ramp) and with air clean them out completely--try not to blow it inside the screen. It looks like a dust storm in most cases but can cause exactly the problem you have.

Apr 23, 2012 | Mitsubishi WD-60735 Projection Television

1 Answer

Tv made a popping sound and doesnt turn on now


Most likely the power supply board went--here is some general information and suggestions:

I see so many here with no sound/nopicture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have tobuy and try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.
4_4_2012_3_04_41_pm.jpg

Take a look at the power supply board inside the set and see if any caps are puffed up like these bad ones are.

Apr 04, 2012 | Samsung 50 in. Plasma TV

1 Answer

Vizio 42 inch lcd tv gave a pop and will not turn on


Someone needs to open it up (I have some cautions for you here) and look to see if puffed up or damaged caps in the power supply of the set--see attached photo typical of this.

l caution all here who open these sets--extreme care must be used as set has to be laid face down--any mistake or downward pressure can destroy the screen unit which is fatal.

Let me know if questions.


4_3_2012_4_08_30_pm.jpg

On the power supply board inside the set look for caps like these that are puffed up--should be perfectly flat on top.

Apr 03, 2012 | Vizio 42 in. LCD TV

2 Answers

I have a rca tv, model L32HD31, it won't turn on, the power light on tv is green but it should be orange, what is the problem?


Tv power supply board have problems and the causes.That the board where the tv power a/c cord plug into it.Check the tv power supply board carefully for dying and leaking capacitors parts.These capcitors parts are dying and leaking are alway bulges up or puffing up onto it tops.Have all tools and know basic electronic also can do basic soldering work too?Yes changes all these capacitors parts are dying and leaking like bulges up or puffing up onto it tops.Or tries website like Shopjimmy.com,Ebay.com to by a whole refurbish power supply board for the replacement.

Aug 23, 2011 | RCA L32HD31 32 in. LCD HDTV

1 Answer

I have a Samsung LCD TV and it won't turn on


A common problem with samsung flat panel tv's is that the capacitors on the power supply fail.
You will need to remove the back and check the power supply pcb for puffed caps. To do this you will need to lay the tv face down on a cushioned surface and remove all the screws that secure the back of the tv. You will need a surface large enough to support the whole tv. This is to protect the panel. DO NOT place tv on surface where the front of the tv is not supported by the frame.

Remove the back of the tv and check for puffed caps on the power supply pcb. This is the board that the power cord is attached to.

If there are any puffed caps, you will need to replace them with equal or slightly higher valued caps.The value ratings are printed on the capacitors in mfd and voltage.

You will need a soldering iron to remove and replace them.

After reinstalling the power supply and before you put the back on, hook up a power cord to the tv and try turning it on. If you see a backlight come on, the tv is working. Try hitting the meny button and see if you have an on screen display. If you do put the back cover back on.

If tv doesn't power up, then the power supply pcb is probably bad. Try checking the voltage outputs from the connectors on the side of the pcb. Use a digital multimeter, connecting black lead to chassis ground and read lead to check voltage on the pins of the connectors. There should be voltage levels printed next to the connector on the pcb. Let me know if this helps you.

Apr 04, 2011 | Samsung LN52A550 LCD TV

1 Answer

Power will not stay on , on my magnavox tv model 32mf337b/27 unplugged like user manual suggested but didnt work even after 30 hrs saw on magnavox.com a few people have had same proble with this model mine...


Magnavox has issues with puffed caps on the power supply. This sounds like its a 32 inch lcd tv. I tried searching for a service manual for this and can't find one. If it is an lcd you need to look at the capacitors on the power supply. If they are puffed up, you will need to replace them with equal or slightly larger valued capacitors. The capacitor values are mfd and voltage printed on the capacitors themselves. You will need a soldering iron to replace them. Lay the tv, if it is an lcd, on a flat surface cushioned by a blanket. Make sure the surface is large enough to support the tv frame, as you don't want to cause damage to the panel. remove the back of the tv. There are numerous screws, and once the back is off, check the power supply pcb for puffed caps. This is the board with the power cord attached. I know in magnavox tv there is a cage covering the power supply, so remove any connectors because you will have to flip the cage housing the power supply to get to the caps. If you feel confident, give it a try. Let me know how it goes

Apr 03, 2011 | Televison & Video

1 Answer

Hi, Need users manual for Toshiba 37XV505, picture gone tv only 4 months old, Help


A user manual will do you no good for a tv that has lost its picture. You will need a service manual. Your tv sounds like it's a 37 inch lcd or plasma tv. The cause could possibly be puffed capacitors on the power supply. If you feel confident, you could check the power supply pcb and visually look at all the caps on it to see if they are puffed.
To do this you need to lay the tv face down on a cushioned surface large enough to support the tv by the frame. This is to prevent any damage to the panel. Then remove all the screws securing the back of the tv to the frame. Look at the power supply pcb, it is the board with the power cord attached to it, for puffy caps. If they are puffed they need to be replaced. Replace with capacitors of equal or slightly greater values. The values are marked on the caps themselves in mfd and voltage.
If they look good, take a multimeter and test the dc voltage outputs, usually marked on the power supply near connectors with different colored wires. There should be three of them together. Take the black lead of your multimeter and connect it to chassis ground, and the red lead use to check the voltages.

Apr 03, 2011 | Toshiba Televison & Video

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