[TechAssist] Re: Sony KV20V80 plug in,dead, only "thump-thump" from spkrs.
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 8 Dec 2004 07:52:12 -0500
SYMPTOMS: There was a loud thump from the speakers when the unit was plugged
in. The unit would not turn on. The 9V line did not switch on. We found that
the CPU was not issuing a power on command - or anything else.
RESOLUTION: The 9V line did not switch on. We found that the CPU was not
issuing a power on command - or anything else. The cause was the
Reset/IC002. It was holding the reset line low. Replacement of IC002
resolved the problem.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxx
----- Original Message -----
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, December 07, 2004 3:01 PM
Subject: [TechAssist] Sony KV20V80 plug in,dead, only "thump-thump" from
spkrs.
> Plug it in, a fairly loud "thump-thump-thump" thru the speakers.
> Otherwise dead. Has +5V standby, +109vdc on collector HOT. Replaced main
> filter, no help.Any suggestions?
> Phil Bader
>
> --
>
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
>
>
>
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