[TechAssist] Re: RCA 35" G35830WK, CTC169JA5 HOT shorted againafter sweep kit,etc
- From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 17 May 2004 17:14:15 -0400
By golly we may be on to something about the SK's.
I pulled the last one from the set before it self destructed.
I had an OEM RCA 200167,2SD1885 on hand.
Installed it and has been running just warm for about twenty minutes now.
Curse those SKs!
Will "cook in" and post results.
Phil Bader
Ron Miller d.b.a. Country TV wrote:
>Don't use a SK device, try a 2sd 1886 or 87.
> they are about twenty subs for the D1885.
>Country TV
>Ron Miller
>Inez, TX. 77968
>
>----- Original Message -----
>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Monday, May 17, 2004 3:47 PM
>Subject: [TechAssist] RCA 35" G35830WK, CTC169JA5 HOT shorted again after
>sweep kit,etc
>
>
>
>
>>Came in dead with the 2SD1885 HOT shorted.
>>With this, my fix is usually a "scan kit" I put together including:
>>2SD1885
>>C4401, .0162/1600v, 206009
>>C4402, .056/400v, 200149
>>C4403, .5/250v, 200150 (orig was a .48mfd)
>>C4406, 470pf/2kv 227068
>>CR4401, 242907
>>CR4402, 243636
>>This usually cures a shorting HOT.
>>I also, for good measure, changed CR4118 and three lytics in the smps:
>>2.2mfd,15mfd and the 47mfd (orig. was 39mfd)
>>Unit powered up with beautiful picture and played OK. I reentered the
>>room 15 min later and dead again with a shorted HOT. Clipped HOT
>>collector, plugged set in ,measured HOT DC supply at collector and is
>>+146VDC standby, normal.
>>I installed another 2SD1885 (Must note that both my two replacement HOT
>>transistors were both "SK" series 2sd1885).
>> The set once again powers on with good full picture, good regulation
>>and sharpness.
>>BUT...
>>The HOT seems to get uncomfortably warm to touch after a few minutes.
>>Possibly this is what destroyed my first repl. part.
>>Fly's are not commonly bad in the 169's,especially in this way .
>>What am I missing?
>>The SK brand parts?
>>What else is there?
>>Phil
>>
>>--
>>
>>Philip Bader
>>Jan Phyl TV Inc. (estab. 1976)
>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>Fax (863) 299-8821
>>email: tjanphyl@xxxxxxxxxxxxxxx
>>
>>
>>
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--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
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