Question about Vizio L32 32 in. LCD HDTV

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No power the power board has a burnt diode or whatever it is. nedd to find a used or new power board reasonable

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If you have isolated the problem to the power board, then you can look on the 'net for a board. One place to look is eBay. You will need your TV model number and the part number of the power supply board. Look at;
http://stores.shop.ebay.com/interliquid__W0QQ_sasiZ1
http://www.shopjimmy.com/
There are other places you can look at too.

Posted on Mar 10, 2009

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Posted on Jan 02, 2017

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I have a Samsung un60d6450ufxza TV we had an electrical storm and while we were watching it the TV flashed and stopped working. The power board clicks, and the power light flashes No sound no pic


A voltage surge has damaged the power supply, the first board in line with the power cord that carried the transient.. Pull out the board and carefully examine all of its components, especially look for burnt or discolored resistors, bad diodes, bulging or leaking capacitors. If you have time and patience check out as many of the components as you can because the damage is on that board.
Worst case scenario is to get a new board. But if you check out ebay under the tv name, often you find sets and good replacement parts. Often the board has a part number on it and you can directly look for a listing for it on that site. Guaranteed to be good and often much less expensive that getting it from authorized supplier.

Aug 26, 2015 | Samsung Televison & Video

Tip

Shorted Rectifier Diode (fuse keeps blowing)


jdvillanueva_14.jpg
This CRT tv is dead set, no reaction when the power button is pressed(no standby led light). I've open the back panel and check the faulty parts.
jdvillanueva_15.jpg

As you can see the fuse was badly burnt-out indication of excessive current due to short circuit.
jdvillanueva_17.jpg

I've checked the parts feeding the AC line to the power supply board (Power cord, VDR, Ceramic capacitor, Coil, Posistor, Degaussing coil) one by one and I've found out that one of the four rectifier diode has a leak which caused the glass fuse burnt-out.
Here's how to test the rectifier diode.

Good Diode
Note : Forward and reverse bias depend on what type of ohmmeter are you using, here I'm using a Japan Standard(Sanwa Brand).
jdvillanueva_21.jpg

Using an ohmmeter set it to X10 to see much easier the leak from the diode in reverse bias.

Forward Bias : test the diode by connecting the red test prod of the tester to anode and then the black test prod to cathode of diode. You will see the pointer will reads a faily low resistance(above picture).
jdvillanueva_22.jpg

Reverse Bias : test the diode by connecting the red test prod of the tester to cathode and then the black test prod to anode of diode. You will see at the picture(above) that the pointer didn't react (remains in infinity). This is a good diode.


Bad(leaky) Diode
jdvillanueva_23.jpg

Forward Bias will reads fairly low resistance.
jdvillanueva_24.jpg

Reverse bias unlike the good diode the pointer will also reads a fairly low resistance.

After confirming that the diode caused the fuse from blowing I've decided to replaced all four diodes since I have a lots in my stocks.
jdvillanueva_25.jpg

Remember that when you installing the new diode on the board, make sure that you will make it in the right polarity.

jdvillanueva_26.jpg

This steps is also applicable in the DVD Player,Flat panel, Projection, LCD TV, you have to disregard only the posistor and degaussing coil.

Have a nice day!
Thanks for using Fixya.

Jdvillanueva

on Mar 02, 2011 | Televison & Video

1 Answer

Capacitor r good but the tv wont turn. On


Capacitors rarely go bad. Look for burnt components. I'd suspect you have a bad transistor or diode but don't over look the obvious things like a fuse. The ideal way to trouble shoot this is to get a huntron tracker and an identical board to compare readings. You might be able to get away with a meter with a diode tester if you don't have a huntron tracker. But since you would need an identical board to compare readings you're really better off buying a new board if you could find one.

Jul 04, 2013 | Televison & Video

2 Answers

Philips 32PFL3505D/F7 32-Inch LCD HDTV keeps turning off when I turn it on


very common failure on this tv is electrolytic capacitors failing on the power supply, the module that your power cord plugs into. The Caps can appear to have swollen tops, replace with same type or slightly higher working voltage. Observe capacitor polarity when installing new parts. Probably 1000 mfd @ 16V could be 1000mfd @ 25V.
you need soldering skills to repair the parts in question.

Mar 03, 2013 | Philips 32PFL3505D 32 in LCD TV

2 Answers

I need a power supply board # 080GL19X01LT


Have a look here. Hover your mouse over the area of the PCB to zoom in on the component you're trying to identify. I saw the C604 labeled as:
"B. 102K 1KV" I couldn't see the other part you're look for though.

Check out this replacement PCB for $88. It isn't available for shipping until March though.

Good luck!

Feb 05, 2013 | Vizio E420VT 42 Class Razor LED HDTV

3 Answers

Fuse keeps blowing in my philips 32pfl3505d/f7 tv


Good day!!!!


That problem is cause of shorted bridge diode or power mosfet..

just see the picture below to see the image of bridge diode and power mosfet..

bugoy31_16.jpg

If you don't have a tools or you have no electronic background you only have to is order the new power supply board..

I hope this solution will be helpful..Thanks for using fixya....

Sep 04, 2011 | Philips 32PFL3505D 32 in LCD TV

1 Answer

I have aVizio VX42L HDTV10A. was watching a show when we heard a loud pop.Then all went dark. Would not turn back on. I took off the back cover and found the ceramic fuse was blown on the board # DPS-283AP...


This means you have a dead short, It is probably a Diode in the power supply area, but without testing board you don't know. If you know basic electronics, i would say check all diodes in power supply and look hard for something burnt and replace that also. Or just replace power board, check shopjimmy.com

Dec 08, 2010 | Vizio VX42L 42 in. LCD TV

1 Answer

Fuse and power supply look ok to the eye slight static sound on audio tiny flash intermitent inright corner on video, any clues? power diods check good ,nothing looks hot or burnt There is a second board...


Your power supply on the dc output should have the floowing DC voltages, 5v, 12v, and 24v. Just start probing the connectors of the power supply. 24v is needed for the backlights inverter board, 12v for sounds, 5v for logic board.

Dec 09, 2009 | Audiovox FPE3206 32 in. LCD Television

2 Answers

Power supply


8a953f8.jpg

Here is my board that i ordered for replacement, as you can see, the top left second in --cap IS BLOWN. so i think i can either, use a cap from my other board into this and see if it works, or.....test out my current board, and use this board for parts.
any suggestions, that be great. As far as,... which diode.. maybe this can help. cheers.-- Goat

Mar 11, 2008 | Akai PDP4294 42 in. EDTV-Ready Plasma...

3 Answers

BURN UP


Your statement is not clear. You did"t say which diode and what type of problem you get. Please give the chassis details and clear symptom you seen. Normally burnt up diode is due to overload, threshold frequency, current and bias factor. Your clear picture only much useful to guide you.

Sep 05, 2007 | Akai LCT3285TA 32 in. LCD Television

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