[TechAssist] Re: RCA Chassis CTC169BG2 No Power

Cr 4118 interrmittent
Phillip R Hull
phil245@xxxxxxxxxxxxx
----- Original Message -----
From: "Mike Barnett" <passthecash@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 13, 2001 11:35 AM
Subject: [TechAssist] RCA Chassis CTC169BG2 No Power


>
> Hey Guys, Need some help w/ this one. Here's how it goes, Set came in with
> no power and loses color Intermit complaint. looked around and did'nt find
> anything out of the ordinary. I replaced the three caps in chopper
> curcuit(c4102,c4104,c4108) was also missing vcc run voltage at pin 16 of
> u4101, changed it too. re-assembled and set came up. unit was running good
> all voltages seem to be good with the exeption of cr4102 was quite a bit
> low. still had the intermit color. when changing channels it take about 1
> second to have colorand accationally the pic would go to b+w. also then
the
> set would shut down losing 200v.. At pin 16 of u4101 still had runvcc v
but
> missing3v at cathode of cr4102. even when the set was running the voltage
at
> cr4102 is very low/about 1.5v. this is supposed to be 3vdc? The set shut
> down and now will not power up at all. Have 170 @ collector of q4101 and
12v
> at pin 16 of u4101. missng 200v from pin 10 of fly and checked r4703.
> checked pin 16 on ICu1001 for 5.7vdc and is missing, checked Q2906 it was
> good but i changed it anyway with ECG288. Still didn't fix. Have 180v at
> collector of Q4402 and cr4401.
> Changed horizonal retrace cap c4401 and changed c4402 and cr4403.
> CAN ANYONE HELP WITH THIS??? I'm Going outa my mind.
>
> TIA
> Mike Barnett
>
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> Get It Fixed At
> Rochester Electronics
> 630 West Ridge Rd.
> Rochester, NY 14615
> 716.663.6870
> www.RochesterElectronicsRepair.com
>
>
>
>
>
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