zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

[tom66]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

Well, I wouldn't call any budget LED TV "nice" by any means...

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

no.... thats with the power cable going to buffers from y disconnected

[tom66]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

Is that with the orange ribbons from the Y-buffer disconnected too?

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

if i disconnect z the display goes black

with or without buffers connected

[tom66]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

Yeah that is very odd, I have got tiny pixel sparkles from Y-sus disconnected & Z-sus connected before but never anything bright - without the reset voltage from Y-sus hardly any light can be produced.

[freakaftr8]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

?? That's not supposed to happen. What happens if you disconnect zsus?

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

mines not black it stays bright pink with white....when buffers are disconnected....so how can that be?

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

ok well what should happen if i totally unplug the lower and upper buffer board?

black display?

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

thannks....i guess ill try and install the good y buffer i got today....and see what happens....maybe ill get lucky and the tv will actually work again

[tom66]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

Shorted buffers can pull down the Vscan supply causing similar symptoms.

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

update upper y buffer board is shorted out.........tested it shorted and removed heat sink and ic cracked..........so now what?

if this is the case why woudnt the top half of display be totally black??

its not..its bright pink and white........could this just be a y buffer issue or is the y board also bad and is the z board bad?...heat sinks on y and z all get warm so the ics are working.....i just cant imagine the issue my tv has ius just casued by a bad upper y buffer there must be other issues

[vinceroger69]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

i just tinker with tvs as a hobby but i feel bad for people who do it for a living because the crazy low prices on brand new tvs makes old and broken tvs bascially disposable.....

yes this is what i do too as a hobby fixing then usually isnt a issue selling them for purchase price and cost of parts to repair is all i can basically get not very often i make a profit nowadays.

[vinceroger69]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

thats tom66 guides he has some good ones if you search his youtube videos

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

yeah i already saw the uk talking video lol

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

not long ago it would cost about $1500.00 to get a nice 50 inch projection tv.......now you can get a nice 50 inch led lcd tv for a measly $199.00

something that used to take someone a couple months worth of savings now can be bought basically in 1 days pay

its sad.......

[vinceroger69]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

maybe this one?
https://www.youtube.com/watch?v=51SZsfH60EY

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

i just tinker with tvs as a hobby but i feel bad for people who do it for a living because the crazy low prices on brand new tvs makes old and broken tvs bascially disposable.....

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

fyi did you see how cheap brand new led lcd tvs are now

50 inch LED lcd 199.00
42 inch LEd lcd lcd 129.00
32 inch led lcd 99.00

broken lcd tvs have no value anymore...it really makes fixing them pretty useless but i do like to learn and tinker it jsut sucks that it really has no financial benefit at all

do people even take tvs to repair shops anymore? i bet not

[shelby5041]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

thank you for the info i did both tests on each buffer and all the uppers tesst shorted....the 2 original ones and 1 repalcement i bought in 2010

im going to buy another replacement y upper buffer and will do some more swapping of boards...so far nothing has worked

i dont have much free time so i tinker with the tv when i can.few min here few min there ...i want to hook up a video source to see what the display would look like with a video image on it...the pink and white display photos in my posting are just turning tv on with no video source.....

thanks

[mmartell]

Re: zenith Z50P3 PLASMA TV screen issues pink and purple grainy no image

Can we give him the link? This one's been a battle, I'm having trouble finding that video. Is it in the sticky?

Haha I couldn't find the link that's why I gave him just the info.