[TechAssist] Re: RCA 169 G35830WK retrace lines/red screen @ turn off
- From: "Jerry" <geiting@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 13 Oct 2005 18:11:22 -0400
I ran across this same problem a couple of years ago on this chassis,
instead of the normal problem of the bias regulator transistor q2906 being
leaky, it turned out the OSD output from the microprocessor ic was causing
it. By the way, if it is q2906 that's bad, be aware that CRT arcing can
cause it to fail.
Jerry Eiting geiting@xxxxxxxxxx
Christian's Electronic Service
Troy, Ohio
----- Original Message -----
From: "Larry E" <videotech@xxxxxxxxxxxx>
To: "tech-assist" <techassist@xxxxxxxxxxxxx>
Sent: Thursday, October 13, 2005 9:48 AM
Subject: [TechAssist] RCA 169 G35830WK retrace lines/red screen @ turn off
| Hi Guys, this 35" RCA has a strange problem, set comes on with widely
spaced retraces lines that will not
| adjust out with the screen control, I`m hoping this is Q2906 (which I`m
ordering today) but the voltages on it
| were real close so it may not be the problem, the wierd problem is at
channel change or turn off the screen gets bright red, I swapped the blue
and red driver transistors on the crt board with no change, checked tube on
Sencore CR 70, reads ok, Any ideas ? tia, Larry E
|
| Larry Eastman
| American TV & Electronics
| Crystal River, Fl. 34428
|
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