[TechAssist] Re: Mitsubishi CS-21RX1 and CS-21SX1
- From: Ed Gaidies <teltek2@xxxxxxxxxxxx>
- To: TechAssist <techassist@xxxxxxxxxxxxx>
- Date: Thu, 22 Aug 2002 23:07:22 -0400
Art;
This is the problem on these sets, you change a cap or Q505 plus a
couple of other caps,(in my case) and the set will start working
regular..but tends to keep showing up at your doorstep a couple of weeks
later. I know when I unsoldered a couple of those caps, you got that fishy
smell. I even cleaned the board with alcohol, around that area. But this one
is back again.
-Ed-
art bevilacqua The above is the reply to your message dated 8/22/02
10:34 PM
>
> I just had a CS-21SX1 this past Saturday with similar power on symptoms:
> it would come on just after being plugged in, but not the next time. I
> replaced one marginal capacitor (C516 I think) but the final fix was to
> remove conductive white glue under a couple of sections of the board.
> (At least it's still working as far as I know)
>
> Art Bevilacqua
> Essex Radio and TV
> 40 Main Street
> Essex, MA 01929
> abevilac@xxxxxxxxxxxxx
>
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Edward Gaidies
> Sent: Thursday, August 22, 2002 2:56 PM
> To: TechAssist
> Subject: [TechAssist] Mitsubish CS-21RX1 and CS-21SX1
>
>
> These sets also go under a Electrohome Model # 50CL11 and 50CL3.
> We have been messing with these sets for the last 3 years..with the
> problem, that when the set is first plugged in, will come on and play.
> If
> you shut it off, the next time you try to turn it on....nothing...no
> relay
> click. Set would have to be unplugged for a few minutes and then you
> could
> turn it on again.
> We have changed Q505 which originally seemed to fix it. Then a bunch
> of
> caps, would work for a few weeks. I don't think we ever really pinned it
> down. This set has a IC702 in it which I believe is the Reset transistor
> for
> the 5V.
> Number on the transistor is T520E or PST520E..Mitsubishi Part #
> 266P13003....I can not find any cross reference on this...have some
> scrapped
> chassis, but I suspect that they are not worth subbing, since we get
> allot
> of these, with the same problem.
> Does anyone have any definite fix on this problem...and has anyone
> ever
> successfully subbed IC702.
>
> -Ed-
>
> Note; Have also changed all the caps around Q505 (Arc Limiter) since
> originally something smelled "capacitor fishy" around that circuit. C517
> C518...C520 etc.
>
> Tel-Tek Electronics
> Midland, Ontario
> Canada.
> teltek2@xxxxxxxxxxxx
>
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