[TechAssist] Re: Sony KV 32S40 Relay continues clicking no power up
- From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 28 Oct 2004 21:18:27 -0400
Preston,
From Tech Repair CD:
Sony\KV32S40\Unit had the power supply IC601 shorted and R607 open. Tech
replaced these components and it
shorted out again at the instant the television was plugged in\\\\never
recommend that after replacing
these components in the power supply that the set have full line voltage
applied to it. The odds are very
high the new components will\Suggested the tech use a variac to do these tests.
This power supply should
start running at 10 vac as a line source. The current should never go above 100
ma\during a no load test.
Max 800 ma during a normal load. When running this power supply at 15 volts the
current was surging to
over 200 MA. Checking all the\loads on the secondary found no obvious short
circuits. However when
checking the capacitors in the primary we found C610 has internal resistance of
470K\There should be no
internal resistance. Replaced C610 and restored normal operation. Suggest that
C609* C610* C611* and C612
be replaced when this happens\\\\
Sony\KV35S40\Dead set* one click\\\SCC-S07D-A\Q502 Horizontal Output Transistor
2SC5148 part #
872903575*IC601 Converter (Switching IC) MX0841AB-F part # 872904112\R607 0.1
ohm 1/2 watt fusible
resistor part # 120293361*Check soldering of horizontal components\\\\\\\
Jeff
--
Intrepid Video TV/VCR Repair
263 S Front St, Steelton PA 17113
717-939-7708; (F) 717-564-4952
www.intrepid-video.com www.tech-repair.net
----- Original Message -----
From: "preston McGiboney" <pmcgiboney@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, October 27, 2004 7:59 PM
Subject: [TechAssist] Sony KV 32S40 Relay continues clicking no power up
This Sony tv KV32S40 will consistenly kick the relay
but will not fire up. Hor out checks ok and fuses ok.
Not too familiar with this unit son any help
appreciated
Thanks
Preston
Audio-Video Specialists
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