[TechAssist] Re: av27920
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 9 Jun 2003 18:23:16 -0400
Replace the following components:
IC421 Part# LA7832
D422 (75 volt zener), part# MTZJ75-T2
D541 (NTE552)
R541 (1.8 ohm, 2 watt)
C424 (100mfd/35v)
C425 (470mfd/35v)
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: "Juan Guzman" <j_guzman51@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, June 09, 2003 3:59 PM
Subject: [TechAssist] av27920
> Av27920 is dead.
> Had shorted vertical output ic.replaced is stiil dead.
> Checked for shorts and found none.
> Suspect micro is not allowing horizontal transistor to activate flyback to
> generate the needed voltages.
> Any suggestions.
> Also will apreciate if i could get the flyback schematics.
>
> Juan Guzman
>
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