[TechAssist] Re: CTC187CH3
- From: Jorge Camboni <geo@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 09 Jul 2003 19:44:26 -0500
best sub is 2sd1887. It usually dies for 2 reasons:
1) it gets very hot when the 0.047/0.056 mf cap
associated with pincushion circuitry goes open
(besides the distorted picture - pincushion + increased width)
2) the buh517 does not stand it for a long time, the heath transfer
compound has been omitted at the factory!!!!!
The 1887 is a stronger-higher beta tr, and runs
very cool at that place. I have also used
a 2sc5148 (the one rca uses in newer sets) with % problems,
0% returns in either case.
B4 somebody jumps at my neck for not using originals, I
must say that I have never had a return on a 2sd1881-2sd1887
after several years of subbing.......
Jorge
At 01:07 p.m. 09/07/03 -0400, you wrote:
>Thanks Bill and Wayne. I don't have either, so I'll order the original. Any
>known reason for these to "cack" out?
>
>-Ed-
>Tel-Tek Electronics
>Ontario-Canada
>teltek3@xxxxxxxxxxxx
>----- Original Message -----
>From: "Premium Technologies" <premtech@xxxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Wednesday, July 09, 2003 12:39 PM
>Subject: [TechAssist] Re: CTC187CH3
>
>
> > Ed,
> > It's better to use original, but I've had no problems with the BUH517,
>just
> > make sure you don't get a BUH517x... Did that once and wasn't paying
>close
> > attention. It shorted E to B under a minute.
> > Hope this helps.
> > Bill
> >
> > William Rayburn, CET
> > Premium Technologies
> > PO Box 442
> > Long Beach, WA. 98631
> > (360) 642-4993 Phone
> > (815) 425-8530 Fax
> >
> > ----- Original Message -----
> > From: "teltek3" <teltek3@xxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, July 09, 2003 9:27 AM
> > Subject: [TechAssist] CTC187CH3
> >
> >
> > > Anyone know of a "GOOD" sub for Q4401 (H.O) transistor, Original Part#
> > > 223942. Or do we have to use original in this set.
> > >
> > > -Ed-
> > > Tel-Tek Electronics
> > > Ontario-Canada
> > > teltek3@xxxxxxxxxxxx
> > >
> > >
> >
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Jorge Camboni, GY Electronics, Richardson, TX
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