Re: Vizio e322vl - no back light and no picture
have u checked the voltage across all your low drop regulators? about every vizio ive messed with seemed to have problems with those.
dmesser100
Senior Member
Last Activity: 02-06-2016, 12:16 PM
Joined: 10-07-2011
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Re: Westinghouse VR3215
I only get 5volts in 5vbs. anybody got some advice? don't mind buying a board to fix, just need to know which one main or power.Leave a comment:
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Re: Westinghouse VR3215
ok, eprom replacement did nothingLeave a comment:
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Re: Westinghouse VR3215
mosfets checked out fine too. think im goin to order the eprom and give that a shotLeave a comment:
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Westinghouse VR3215
Hi all, this one has kinda stumped me. Red light is there but power button does nothing, no clicks or picture nada. caps and diodes seem good, tested diodes, caps did a visual. only get 5vdc on the vstb pin. would this be a eprom on the main board problem? -
Re: Zenier diode test bad
itsa 40' emerson. lc401em3f. power board was blowing fuses. so I bought a shop jimmy kit. replaced 9 diodes and the ic. now it clicks but doesn't blow fuses, this kit has a lot of parts in it.Leave a comment:
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Re: Zenier diode test bad
bud it seems to be. connected to a 1.2 ohm and the right leg of mosfet. so this normal?Leave a comment:
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Zenier diode test bad
I have a zanier diode that tests shorted in circuit but tests good out? its on a BA01P0F0103 3 power board. kind of confused -
Re: Samsung 50" Plasma HPT5044, No Picture but powers up
ZD5806 seems to be shorted and Q5000 and Q5002 I cant get any readings from, oddLeave a comment:
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Re: APS-254 power supply on a 40" sony
the resistance on the cathode pad with d6105 in circuit is 256 ohms, reversed it is 486. will be adding the pics here shortlyLeave a comment:
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Re: APS-254 power supply on a 40" sony
I will check that in the morning and get backLeave a comment:
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Re: APS-254 power supply on a 40" sony
I put it back in. It tested good out of circuit. If im getting standby power to the board, could it actually be the logic board that has the problem?Leave a comment:
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Re: APS-254 power supply on a 40" sony
I hear no clicking or signs I meant. Thanks budm, I will check those in the morning and get backLeave a comment:
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Re: APS-254 power supply on a 40" sony
OK now the only volts that are getting to the main board is a 3.3volt standby. but I hear now click or see any signs of life when I try to power up the tvLeave a comment:
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Re: APS-254 power supply on a 40" sony
zero ohms on the fuse. I am using the chassis for a ground for the meter, I usually use an open screw hole on the frame. I have fixed the vizio ldr problems on my own TV's, and 6 others. So im still learning, try to research as much as I can before asking. but this one is a new ball game. and the 50" Samsung I just learned what was bad on it. will go thru the resisters tomorrow and anything else I can test.Leave a comment:
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Re: APS-254 power supply on a 40" sony
I put the diode back on the board and put power to it. im getting 65volts across the fuse. I thought it would read 120v ac. I have tested all diodes and transistors, seem ok.Leave a comment:
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Re: Samsung 50" Plasma HPT5044, No Picture but powers up
Ok video was very helpful. seems two chips on my upper buffer board is bad. $61 repair service seems the best deal going so far.Leave a comment:
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Re: Samsung 50" Plasma HPT5044, No Picture but powers up
So should replace all the mosfets that I took out? seems to be a fail waiting to happenLeave a comment:
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Re: Samsung 50" Plasma HPT5044, No Picture but powers up
So when the main goes out it takes the buffer with it? that sucks. ive seen where others have had burnt components on theirs. mine shows none. but will look toms videoLeave a comment:
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Re: APS-254 power supply on a 40" sony
You are right tw2005, found a pic of it online with the numbers you provided. am looking over the schematic to get a better idea what to check next. thanksLeave a comment:
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