[TechAssist] Re: RCA PTK169 chassis smps C4108 question
- From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 4 Sep 2003 07:38:34 -0500
I really haven't seen any difference, and I've been doing this for the last
2 years. I just replace them with whatever I have in stock and none have
come back.
Realisticly.....it changes the AC resistance from 0.25 ohm to 0.21
ohm.....of course that's if I did the 1/2(pi)(freq)(cap) formula on my
calculator correctly.
With those figures, I'd be just as comfortable sticking a 33 or 68 uf in
there if I was 60 miles away, with nothing else to replace it with.....
Damon Brunger
Telrad Electronic Services
Ft Wayne, IN 46815
----- Original Message -----
From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, September 03, 2003 10:01 AM
Subject: [TechAssist] RCA PTK169 chassis smps C4108 question
> In this P46770CKLG1 / PTK169AAS projo I am troubleshooting a dead smps
> after storm.Changing smps IC U4101 and the surrounding lytics while I'm
> in there(one was open).
> Question: C4108 is a 39 mfd electrolytic. The schemo has next to this
> printed value in "( )" 47 mfd as well.
> Is this value critical or can I sub to the 47mfd since I have this in
> stock?
> I have had SMPS parts kits for the 169's that used a 47 as general
> replacement for smps C4108.
> If it used a 39 must I replace it as same?
> Phil Bader
> --
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
> For Professional Technicians Only
>
>
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