[TechAssist] [Fwd: FIX: Memorex model TM4500 PTV (MItsibishi) converg. fix.audio problem]
- From: Phil Bader <philbad@xxxxxxxxxx>
- To: "techassist@xxxxxxxxxxxxx" <techassist@xxxxxxxxxxxxx>
- Date: Fri, 24 May 2002 08:47:20 -0400
To cure our sound distiotion (see thread below) we found another
Mitsubishi scrap chassis, a Model CK-2602R. Had same ceramic filters
(location# SF330 and BP330). On our Memorex PTV , on the side board
(tuning/audio) inside a shielded area next to the tuner was IC301
(M51358P= ECG1545) changed that IC as suggested,no help.On either side
of IC301 was saw filter SF301 and ceramic filter CF301. Changed
both,sound cleared.Fixed.Tandy says call Mitsubishi on these for
assist.-Phil Bader
Phil Bader wrote:
>
> This 1987 year Memorex model TM4500 (made by Mitsubishi,a Mits. remote
> works it)PTV had bad bottom convergence. On converg. panel replaced
> IC8A1 (STK4273) cured it,but also our tuner audio appears
> misaligned.Picture good.Has hiss,may hear another channel audio,some 4.5
> MHz buzz.I'm thinking a bad ceramic filter (SAW).Looking at the
> tuner/sound board mounted on side. Need to know what Mitsubishi model
> corresponds to this unit. Possibly a VS4001? Also anyone have a print or
> scan? Tandy store (McDuff) sold this in 1987.Any help needed.-Philip
> Bader
> --
> Philip Bader, Jan Phyl TV Inc.
> 3420 Recker Hwy,Winter Haven, Fl. 33880
> voice/fax: 863-299-8821
> Established 1976
--
Philip Bader, Jan Phyl TV Inc.
3420 Recker Hwy,Winter Haven, Fl. 33880
voice/fax: 863-299-8821
Established 1976
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