Re: Vizio led tv

OK, I took a gamble and lost. I replaced the power supply board (Shop Jimmy) and still no 12VDC. I disconnected the Back lights and substituted some 18Watt tube fluorescent bulbs but still nothing, so I think I've eliminated the back lights ( if not loading the inverter).

I thought someone said I should have 12 Volts as well as the 5 Volts for the set to power up. Or: do I have to power up some other way to get the 12VDC?

The main connector pin 1 is ps on/off
pins 2,3,4 are +12 (but I measure 0 V)
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Re: Vizio led tv

Turns out those are not bad MOSFETS, but good Full-wave rectifiers. The problem is in another area. The saga continues.

Re: Vizio led tv

After removing the two defective MOSFETS, I tried dummying (KEY WORD) in 12VDC at PINS 2,3 &4 OF the 15 Pin connector. I had 5VDC to start but now I'm afraid I blew something.

Thanks Kevin, and guys for the tips.

I'm going to order a replacement board from ShopJimmy Monday. Can't beat that price. Still if I could get a schematic, I'd like to see if I could fix my board.

Eddie

This past weekend I came across a LED Flat Screen TV, curbside Naturally I could not pass up this opportunity to explore new technology.
It is a model VISO VW42L FHDTV10A. S/N: LQPBYGKO303318, and set # is 10235072022.

I believe the trouble is the power supply board. The part number on the board is P/N: 3BS0198313GP above that number is Model No: FSP234-2M101. Rev.1.

Attached are photos of the supply board and main board.

I have determined that at minimum, two power MOSFET's: CRS101 (NF818) & CRS 201 (NF840) are defective.

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Re: Vizio VW42LFHDTV10A - Only the logo light comes on

Thanks Budm. I read your excellent guides. First I will get some proper loads for the supplies: Inverter output, 5v and 12V as you suggested. When evereything is connected in the set, I don't get any readings on the ps on/off pin, even when I press the on /off button. I was hoping once I have the loads attached, I could extrenally apply 2.5VDC to see if it will power up. I fear the other (controller ) board may be trhe problem.

Re: Vizio VW42LFHDTV10A - Only the logo light comes on

I hope this is an appropriate point to jump in your thread:

This past weekend I came across a LED Flat Screen TV, curbside Naturally I could not pass up this opportunity to explore new technology.
It is a model VISO VW42L FHDTV10A. [B] S/N: LQPBYGKO303318[/B], and set # is 10235072022.

[B]The power supply board looks nothing like the one in your postings. There are only 4 connectors on the PS board: CN101(AC Power),CN203,CN204 (Backlight outputs), and CN201 (15 Pin connector).[/B]
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Re: New Members - please post your introductions here

Hi, My name is Eddie, I am new to forums. I'm 64. I started out fixing tv's and radios in the 60's. In the 80's I went to work in industry and haven't done much cosumer repair since. Now as I get close to reirement I'm looking into electronics hobby activities. I can share what I know about industrial electronics and look to relearn hobby/consumer electronics.
Eddie