It says May 2003 on the back, so it's clearly an older model.
I figured there was a slim chance this was an easy cap and
fuse fixer-upper, and if not, I could sell the parts on Ebay. But
the problem is I didn't see many listings for the Vizio P4, but that
could mean simply less competition when I do list the boards. I'm
not sure what the market demand for this model is, but there wasn't
too much info on the archives here or anywhere else on the internet,
so I figure I may have blown $10. OTOH, as soon as I sell just one
board off this guy, I'll think it was worth it! The Ebay market DOES
amaze me sometimes!
Ok, here are some pics:
At first, the relays clicked when turned on, and the LED on
the main board turned on and stayed on with the relay click.
But totally black picture, and no sound from speakers.
The 2nd pic is the Y-sustain, and I measured:
Vcc = 5V
Vf = 14-15V
VW = 0.3 V
Vs = 4 V
And the same on the X-board, but
with:
Vxg = 0
The panel says: VsSET=173, VxgSET=160, so it
looks like the Vs and Vxg are totally off.
Then, after playing around for a few minutes, the
LED on the main and the relay began to shut off automatically
after about 3 seconds. During the 3 seconds, there
is sometimes a faint arcing noise, and the lights
in my house dim just barely, so it's clearly
some sort of crowbar, current-limiting protection
scheme that shuts off the relay. Also, the relay
will turn off even when the Y-sus and X-main
main cables are disconnected from the power supply.
But it's intermittent, and sometimes I can get
the LED and relays to stay on.
So it looks like a bad power supply to me, but
I'd like to know what you guys think. Like how
should I test to make sure that the buffers and
Y-sustain and X-main are still good?
I found this one:
http://www.ebay.com/itm/Gateway-GTW-...item1e69ec5498
And added it to my watch list.....
Thanks for any advice.....
I figured there was a slim chance this was an easy cap and
fuse fixer-upper, and if not, I could sell the parts on Ebay. But
the problem is I didn't see many listings for the Vizio P4, but that
could mean simply less competition when I do list the boards. I'm
not sure what the market demand for this model is, but there wasn't
too much info on the archives here or anywhere else on the internet,
so I figure I may have blown $10. OTOH, as soon as I sell just one
board off this guy, I'll think it was worth it! The Ebay market DOES
amaze me sometimes!
Ok, here are some pics:
At first, the relays clicked when turned on, and the LED on
the main board turned on and stayed on with the relay click.
But totally black picture, and no sound from speakers.
The 2nd pic is the Y-sustain, and I measured:
Vcc = 5V
Vf = 14-15V
VW = 0.3 V
Vs = 4 V
And the same on the X-board, but
with:
Vxg = 0
The panel says: VsSET=173, VxgSET=160, so it
looks like the Vs and Vxg are totally off.
Then, after playing around for a few minutes, the
LED on the main and the relay began to shut off automatically
after about 3 seconds. During the 3 seconds, there
is sometimes a faint arcing noise, and the lights
in my house dim just barely, so it's clearly
some sort of crowbar, current-limiting protection
scheme that shuts off the relay. Also, the relay
will turn off even when the Y-sus and X-main
main cables are disconnected from the power supply.
But it's intermittent, and sometimes I can get
the LED and relays to stay on.
So it looks like a bad power supply to me, but
I'd like to know what you guys think. Like how
should I test to make sure that the buffers and
Y-sustain and X-main are still good?
I found this one:
http://www.ebay.com/itm/Gateway-GTW-...item1e69ec5498
And added it to my watch list.....
Thanks for any advice.....
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