Toshiba TV CX2780A help needed
- From: "I_service" <idk3688_nospam@xxxxxxxxxxxxx>
- Date: Wed, 12 Oct 2005 02:36:42 GMT
Need help with this 14 year old (but still has excellent picture quality)
Toshiba 27" TV CX2780A, chasis no. TAC9160.
After TV on for about 30~45 mins., pictures from off air reception starts to
roll and break up, however, pictures from composite video or S video input
is not affected and of excellent quality. Appears to be a bad solder joint
but could not pin point problem area. Help from anyone who has worked on
this set with similar problem will be appreciated. Have service manual.
What I have done so far with no success:
* Check ESR of electrolytics near tuner module (such as C065, C062, C063),
replace all caps with marginal ESR reading
* Re-solder all joints around tuner module
* Check Q201, no problem with this transistor
* Remove and open tuner module, re-solder all suspected joints
Could it be tuner module has gone bad, or there is still a poor solder joint
or bad cap somewhere?
Please remove _nospam from email address if direct reply.
Thanks
.
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