[TechAssist] Pioneer Audio SX1010, Intermittent Phone output..was intermittent tuner audio
- From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 5 Feb 2004 13:06:24 -0500
Problem below fixed by replacing the outputs, bottom board..2 2sd313 and 1
2sb507
Now, both phono outputs are intermittent and not consistent. Tapping, flexing
boards, wires and I can not
generalize the problem. I remove the two switches, cleaned them and no help.
When it goes off, the relay clicks and anywhere from a second to a few seconds
clicks back on.
Tuner plays consistently..thanks to ABL Elect and others for their responses on
that problem.
Thank you.
Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net
----- Original Message -----
From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
To: "Techassist" <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, February 03, 2004 12:59 PM
Subject: [TechAssist] Pioneer Audio SX1010, intermittent tuner audio
Unit came in with intermittent tuner audio. Other inputs are fine.
I traced the problem to a PCB on the bottom of unit, right beside the AGC fuse
board.
PCB has an intermittent connection somewhere, flexing the board and I can make
the problem come and go.
I've been all over this PCB with a magnifier, soldering iron, cleaning it with
print-kote solvent. I've
pulled the large capacitors, cleaned the glue from under them, remove the three
transistors on the heat
sink, cleaned the terminals and replaced them. I checked the traces near the
screws for the heat sink,
especially. I did find one solder pad with a bad connection and replaced that.
I checked voltages while
unit acted up and didn't find any missing. Moving each wire one each terminal
does not affect the problem,
so I am convinced the problem is on this board. I shine a bright light and
checked with magnifier and am
stumped. Has anyone ran into this problem?
Thank you.
Jeff Dougherty
Intrepid Video TV/VCR
263 S Front St
Steelton PA 17113
fax...717-564-4952
www.intrepid-video.com www.tech-repair.net
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