[TechAssist] Re: Sony Mod: STR-D450Z Protect citcuit
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 25 Jun 2003 14:04:12 -0400
Perhaps this is applicable and I will upload the service manual to the
members area for you.
SYMPTOMS: Display flashes PROTECT. Output transistors OK and no DC is
measured on audio output lines. PROTECT IN line measures 0v.
CAUSE: IC201 was internally shorted, pulling the PROTECT IN line to 0v.
RESOLUTION: Replaced IC201 (part# 8-759-385-78)to restore normal
performance.
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@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "ben daniels" <benstv74820@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, June 25, 2003 1:56 PM
Subject: [TechAssist] Sony Mod: STR-D450Z Protect citcuit
> This took power surge nothing visible that is burnt.
> When you power it up it will show function for just a
> moment then shows protect. I have no service manual.
> Voltage on outputs 62.0 and -62.0 1.0v on the base
> this is probaly not rite. Is there a site I might
> download manual? Or what direction do I need to go? Thanks
>
> =====
> Randy Daniels
> Ben's TV Repair
> 1703 No. Brdwy.
> Ada, Okla. 74820
>
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