[TechAssist] Re: Pioneer PTV SD-P55A3 Dead
- From: "Electric Medic" <info@xxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 26 Jan 2003 23:45:26 -0500
Al:
The set could be in "PD Shutdown" and power supply or vertical circuit
appears to be defective but if actually, only 4A (-25V) fuse is blown. After
fuse is replaced, the set will work, maybe even a couple of weeks or month's
but the fuse filament can be seen to bend momentarily at power on and it
will fail if you just replace fuse. I have seen them look like they are
going to a line momentary when these sets shutdown. I have even seen them
burn vertical or horizontal lines in the phosphorous.
Cure: Problem is on Amp Assy. Which is a little difficult to get to, it is a
side mounted board on the left chassis, signal board- Resolder transistors
and regulators that are mounted to the heat sink and replace both
convergence output ICs
(STK392-110).
Perry Bower
Electric Medic
"It's Cheaper to Keep Her"
http://www.electricmedic.com
Free Electronic Screensaver:
http://www.eyetide.com/download/?s=O3OfmSLHXygGHCv1W6Gz3Bgjtq3DNNMNdcKsYSVGC
3850 Washington Road Suite 5b
Martinez, Georgia 30907
Phone: 706-8MEDIC4 (863-3424)
Phone: 706-863-3474
Fax: 706-863-2316
mailto:info@xxxxxxxxxxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Al Gutz
Sent: Sunday, January 26, 2003 9:36 PM
To: tech assist
Subject: [TechAssist] Pioneer PTV SD-P55A3 Dead
Have to do a service call on this set and since pioneer is a rare breed
around here looking for a bit of info.
Customer said set went dead and he found a open fuse, replaced and the
set ran for about a week and dead again, same fuse open. When he
replaced it agian the set ran for only a few minutes, said the vert
collapsed into a line and then set dies.
Thinking possible vert IC, could someone tell me what this set uses for
vert, so I can take one with me.
Thanks in advance for any info
Al G
Al's TV-Electronics
Pembroke Ont.
Canada.
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