Ram Rod
New User
Oct 26, 2011, 4:21 PM
Post #5 of 12
(19371 views)
Shortcut
|
|
Re: [bdtprez] Vizio VO47L FHDTV10A no picture
[In reply to]
|
Can't Post
|
|
I used an ohm meter to check mine. I also found visible tracking on the traces near the primary leads. The one I replaced was in an L32.....just one inverter board. Other units have master and slave inverter boards. Not sure if one would work without the other. Electronics and circuitry are funny that way, they work how the engineer designed them. Sometimes a control board will need to see a certain load on peripherals before it will switch them on, or switch them on then off so quickly you can miss it with the blink of an eye. If there is a no-load or an overload, it might not even do it at all.
As was pointed out in a previous post, used boards are used boards. Don't forget you need some sort of input even for simple audio. I know you know that. Therefore, if you have an input and no sound OR audio, it may likely be the main board. The power board generally only sends the correct voltages to the main, then the main switches and distributes, and sometimes feeds back to the power board depending. Good test equipment is key, and many times you'll need to test live circuits to know.
I'm working on an LG right now, and one of the disc capacitors shows to be good when dead. Applying voltage however and there is voltage going in but not coming out. Wish I had the magic answer. I have had good luck with the Vizios. I have a Sony Bravia LCD that's kicking my butt so I've let it sit for a while and gone to work on others. Some are easy fixes and some are not. At the current prices of refurbs and some of the open box specials out there, one shouldn't invest too much on parts to fix. The people who know this more than anyone else are the folks that I buy dead TVs from. I keep track of the numbers on each and every one I buy/fix. My top dollar spent thus far was to get a dead VW42L FHDTV10A working for a total of $138.45 and I figure that close to half price of a refurb.
Watch out! Wally World is taking trade-ins on electronics now. Not sure of the stipulations, but not sure I care.
Best of luck to you in your endeavors. DIY does have it's rewards whether it come in the form of a completed task, kudos for the attempt, or an invaluable education. There is seldom failure with DIY. Just remember that. Most won't even make the attempt so you may consider yourself way above average.
|
FORUM
SEARCH
WHO'S 
LOG 
RULES
Re: [wishmeluck01] Vizio VO47L FHDTV10A no picture
[