[TechAssist] Re: [Fwd: RCA CTC169CA,F27203WN.SMPS has raspy noise in stby: C4104 question]
- From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 30 Oct 2001 08:53:24 -0500
Hey, don't forget C4108 (47uf or 39uf )to the base of q4101, it gets leaky
and whacks the smps output, causing repeating failures.
As for your 15uf@50wv, that caps job is to monitor the current flow thru the
smps output and is used for overcurrent protection, I'd stick to 15uf.
Damon Brunger
damon101@xxxxxxxxxxxxxx
Telrad Electronic Services
Ft Wayne, IN 46815
----- Original Message -----
From: "Phil Bader" <philbad@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, October 29, 2001 11:07 AM
Subject: [TechAssist] [Fwd: RCA CTC169CA,F27203WN.SMPS has raspy noise in
stby: C4104 question]
>
>
>
> -------- Original Message --------
> Subject: RCA CTC169CA,F27203WN.SMPS has raspy noise in stby: C4104
> question
> Date: Mon, 29 Oct 2001 10:46:19 -0500
> From: Phil Bader <philbad@xxxxxxxxxx>
> Organization: Jan Phyl TV Inc. Winter Haven, Fl. Estab. 1976
> To: "CONSUMERELREPAIR-L@xxxxxxxxxxxxxxxxxxxx"
> <CONSUMERELREPAIR-L@xxxxxxxxxxxxxxxxxxxx>
>
> The SMPS is audibly raspy in standby,and under power it disrupts the
> picture stability. I pulled lytic C4104 near the SMPS IC, a 15 MFD @
> 50V. It measures 15 mfd and the ESR was about 5 ohms, but was visably
> leaking fluid. Question. 15 mfd is an "off" value. Can I use ,say, a 22
> mfd? Of is there a time constant issue here? I will alsi change out the
> other, C4102 (2.2@100V) as usual.
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