[TechAssist] Re: Panasonic CT36D12DF KP342 PIN related picture twitch
- From: "Satguy" <satguy@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 14 Feb 2004 18:58:29 -0700
I just fixed a 32" with a similar problem, except if I let it run long
enough it would short the horz output. I soldered everything like you did
and it was still there only difference was if I let it run for awhile the
vertical would grow slightly the cause was the cap in the power supply C520
(10 uf 50v) it was right near the regulator heat sink and when I sprayed it
with freeze mist the tv went crazy and shut off. I replaced it and tv went
back to normal operation. Hope this help you.
Shaun
Advanced Electronics
Fort Morgan, CO 80701
satguy@xxxxxxxxxxxxx
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, February 14, 2004 2:49 PM
Subject: [TechAssist] Panasonic CT36D12DF KP342 PIN related picture twitch
> Panasonic
> CT36D12DF
> KP342
> MFD June 2002
>
> Set has a tic or twitch in the picture with a little jump in the
> horizontal, appears PIN related. Scewing is left on top right on bottom
with
> a little black revealed in the corrners (relitave to scew) . Have
> resoldered the horizontal and Pin board, changed out the transistors on
the
> PIN board, checked caps on PIN and vertical, moved the PCC and Horz width
> pots on the pin board, nothing seems to help. The PIN tic/scew/jump goes
> away when the pin board is removed from the circuit (there is a slight,
but
> noticable, pin distortion though). Set is simmilar to the G models
> (simmilar setup to most panasonic quazar since 1998 or a little earlier)
> except that this set uses a LA7845N as the vertical out not a LA7838.
> Voltages on the pin out were low compaired to the G sets. Didn't have a
> schematic on this but not sure it would really help. Any ideas?
>
>
> Peter Oliver
> Tucson Radio TV
>
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