Ok so ya, no screen (which means no image or backlight) and no sound...only the Vizio light came on.
Opened it up and saw a bulged cap on the Master inverter so I replace both of those. With same results (except for one thing I'll explain later).
I've read that a lot of the GV series has the regulator issue so I just decided to order a main board but that didn't change anything either.
All the voltages check on the P/S and there are slots on each of the outputs to each inverter board and main labeled A, B, and C.
A measures 2.267v
B measures 4.8v
and C isn't connected to anything.
Now on the main board one of the transistors labeled U20 was outputting 3v while U15 and U19 (of the same kind) were outputting 5v. (I'll include a close-up)
Is that supposed to be a regulator or...?
Now, the one thing that did change after the caps were replaced was the behaviour of the blue LED on the master inverter board. Before it came on then abruptly went off. After, it smoothly fades away. When power is first cut on there is 3v to the LED but after about 2 secs there is 24v. Why is it doing that? (There is a close up of that (the LED is in between the two big caps)) Are the resistors bad?
On either inverter, there are no voltages getting to the actual inverter itself but the board is being supplied adequate power.
In one pics is a closeup of an IC (Master Inverter) that got chipped or maybe fried? But I was still hoping I would get a picture. So that could be the cause of the backlight failure but I am still a little puzzled about the LED.
I guess too it would be good to mention that you must hold the power button to get to even cut on....sometimes......and like wise to cut it off but it then restarts itself after you cut it off.
So if that is a regulator, would it cause all of this? Or something else?
I am confused
Sorry this is a lot.
Opened it up and saw a bulged cap on the Master inverter so I replace both of those. With same results (except for one thing I'll explain later).
I've read that a lot of the GV series has the regulator issue so I just decided to order a main board but that didn't change anything either.
All the voltages check on the P/S and there are slots on each of the outputs to each inverter board and main labeled A, B, and C.
A measures 2.267v
B measures 4.8v
and C isn't connected to anything.
Now on the main board one of the transistors labeled U20 was outputting 3v while U15 and U19 (of the same kind) were outputting 5v. (I'll include a close-up)
Is that supposed to be a regulator or...?
Now, the one thing that did change after the caps were replaced was the behaviour of the blue LED on the master inverter board. Before it came on then abruptly went off. After, it smoothly fades away. When power is first cut on there is 3v to the LED but after about 2 secs there is 24v. Why is it doing that? (There is a close up of that (the LED is in between the two big caps)) Are the resistors bad?
On either inverter, there are no voltages getting to the actual inverter itself but the board is being supplied adequate power.
In one pics is a closeup of an IC (Master Inverter) that got chipped or maybe fried? But I was still hoping I would get a picture. So that could be the cause of the backlight failure but I am still a little puzzled about the LED.
I guess too it would be good to mention that you must hold the power button to get to even cut on....sometimes......and like wise to cut it off but it then restarts itself after you cut it off.
So if that is a regulator, would it cause all of this? Or something else?
I am confused
Sorry this is a lot.
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