TOSHIBA 42HP95 no start

[tvduude]

i got some crazy hair up my bonnet and wanted distressed plasma to try
an fix.

so got this TOSHIBA 42HP95 attracted to the price tag..
December 2005, i think i should have when for something newer.

was wondering if you guys want to help me fix it. i dont have a clue.

just alot of blinking from a red LED at the power button.

checked the main fuse..its good.

i pulled the big cooling fans for cleaning...theres alot of caked dirt built up in there.

[tvduude]

Re: TOSHIBA 42HP95 no start

already found this thread:
https://www.badcaps.net/forum/showthread.php?t=13431

currently looking for this seine board and the PJ63 mentioned to identify the said
common issue and bypass tuner etc.

[tvduude]

Re: TOSHIBA 42HP95 no start

ok yes now we're talking.
the PJ63 removed gets my tv started up however my pic looks blurry on bottom half and
the guide or source menu comes up but the tv wont stay on for more than 10 seconds or so.
must hit power button to get it back on after these 10 second shutdowns.

edit:
apologies.. premature..
i reconnected the big cooling fans and the system appears to aware i did.. on for a few minuts now..looking at the internal "TVGuide" screen.

yes defineately a blurry area left lower quadrant is blurry.

[tom66]

Re: TOSHIBA 42HP95 no start

Take a picture of the fault...

[tvduude]

Re: TOSHIBA 42HP95 no start

photos:

http://photobucket.com/blurs

the bottom tvguide ad is almost entirely within the blur area. its not my cam...thats what i see here.

[tvduude]

Re: TOSHIBA 42HP95 no start

um.. after 30 minutes or so of snowy screen the tv shut itself down.

[tom66]

Re: TOSHIBA 42HP95 no start

It's hard to see the fault, but to me it looks like a lower Y buffer failure.

[tvduude]

Re: TOSHIBA 42HP95 no start

sorry ..should have mentioned that i'm not a qualified tech but more of a committed enthusiast / mechanic.

[tom66]

Re: TOSHIBA 42HP95 no start

If the TV shuts off in 30 minutes with no signal that may be normal.

You should change the Y buffer soon as it could fail damaging the Y sustain. The Y buffer connects through to the plasma panel - it's the one with lots of little black squares on it.

[tvduude]

Re: TOSHIBA 42HP95 no start

I take it then that this y buffer is either a board or a component module?
looks like?

also:
the blur areas seem to be the bottom corners but not the bottom central as much and the left is worse than bottom right.

also 2:

yes the central bottom one-third does not suffer, is limited to left and right or
express this way 1/3 and 3/3 but not 2/3.

lets try a 3x3 grid thats nine blocks. its blocks 7 and 9 that are blurry..

[tom66]

Re: TOSHIBA 42HP95 no start

The Y buffer is a replaceable board. It looks like this.

http://i.ebayimg.com/t/Toshiba-42HP95-Y-Upper-Buffer-SU-Board-TNPA3189AB-/03/!BqVpfR!!Wk~$(KGrHqQH-E!EuYz1,UnDBLvTmqC23w~~_3.JPG

Looks like your TV uses a Panasonic plasma panel. Very nice! Panasonic produce some of the best.

[tvduude]

Re: TOSHIBA 42HP95 no start

ok yeah i see .
EZ5902T

suitable replacement numbers? i see ebayer listing a EZ5604T.

[tvduude]

Re: TOSHIBA 42HP95 no start

so you think my crisp will come back?

also,
its ok to run in this tunerless mode forever..?
a nice monitor is ok for me.

[tvduude]

Re: TOSHIBA 42HP95 no start

ten four ,
Panasonic ..aahh yes. (head bow)

[tvduude]

Re: TOSHIBA 42HP95 no start

TNPA3556-something.

[tom66]

Re: TOSHIBA 42HP95 no start

http://www.ebay.com/itm/Panasonic-TN...item3a77b5ab55

Not a bad price for a replacement, they are rare failures.

[tvduude]

Re: TOSHIBA 42HP95 no start

so all these used boards are from tvs that would have still worked more than
decent as monitors via this PJ63 pull?

[tom66]

Re: TOSHIBA 42HP95 no start

I expect they are pulls from TVs with cracked screens.

Just checking, is this the board on the left hand side of your TV (looking from the rear?) It should be on the vertical edge of the screen, and there should be another board above it (the Y upper buffer.)

[tvduude]

Re: TOSHIBA 42HP95 no start

i obtained the 3556 number form a board horizontal along bottom behind the
input panel.
have i gone in the wrong direction?


... yes i did.

TNPA3190 is the far left lower board.

[tom66]

Re: TOSHIBA 42HP95 no start

Yeah you want the boards going along the vertical of the panel.

Take a picture if you're not certain.