[TechAssist] Fw: SONY SLV-440 poor drum lok on time shift onl
- From: al <alleathe@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 03 May 2002 11:23:02 -0400
Subject: SONY SLV-440 poor drum lok on time shift onl
> SONY SLV-440 poor drum lock
>
> On PROGRAMED timer only,all other methods,such as manual record, and quick
> record,record fine. On Programmed timer(power switch off) there are
diagonal
> bars(like hor freq off on TV),audio is perfect.Obviously headwheel is
> running at tyhe wrong speed.
> If I touch head wheel,temporarily slowing it down,it locks in poorly.
> Afgter a few minutes the recorded picture is ok and as before,random
> intermittentl diagonal bars.
> We overhauled power supply(suspected always on B+) and esr'd the caps
> replacing some,no change.
> I now suspect mechanical problem in drum assembly or poor coupling caps
> in FG to servo chip,
> have no notes. Appreciate help,and I have lots of service notes on TV
sets,
> if anybody needs. al
>
> alleathe@xxxxxxxxxxxxx
> Al Leatherman
> Mine Hill, NJ 07803
> 973-361-5796
> WWW.ALS-TV.NET
>
>
>
>
>
>
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