[TechAssist] Re: RCA CTC185AB Dead F25216WT may 1996
- From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 27 Oct 2002 23:54:58 +0000
I need to look Didn't note that check point on my way out the door
yesterday, today I'm not at work. There are no FBT dervied voltages since
there is no oscilation. Only B+ derived.
Peter Oliver
Tucson Radio TV
From: "al m" <ampm@xxxxxxx>
Reply-To: techassist@xxxxxxxxxxxxx
To: <techassist@xxxxxxxxxxxxx>
Subject: [TechAssist] Re: RCA CTC185AB Dead F25216WT may 1996
Date: Sun, 27 Oct 2002 12:46:15 -0500
do you have your 7.5v on pin 20 of U1001
al marquardt
ampm@xxxxxxx
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, October 27, 2002 9:51 AM
Subject: [TechAssist] Re: RCA CTC185AB Dead F25216WT may 1996
>
> The 5V supply is present at the front buttons.
>
> Peter Oliver
> Tucson Radio TV
>
>
>
> From: "al m" <ampm@xxxxxxx>
> Reply-To: techassist@xxxxxxxxxxxxx
> To: <techassist@xxxxxxxxxxxxx>
> Subject: [TechAssist] Re: RCA CTC185AB Dead F25216WT may 1996
> Date: Sun, 27 Oct 2002 08:13:58 -0500
>
>
> You don't mention the 5V supply anywhere. Do you have a scat?
> al marquardt
> ampm@xxxxxxx
>
>
> ----- Original Message -----
> From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, October 26, 2002 5:34 PM
> Subject: [TechAssist] RCA CTC185AB Dead F25216WT may 1996
>
>
> >
> >
> > RCA model F25216WT
> > Chassis ctc185AB
> > MFD May 1996
> > Symptom DEAD no flux at plug in no attempt to start or turn on
> >
> > Has voltage
> > Q4114 D=165V, S=162V, G= 135V
> >
> > Q4401 H.O.T Collector = 162V
> >
> > U4107 (12V reg) pin 1 (in)= 27V pin 3 (out)=11.9
> > CR4110 cathode= 27.8V
> > saw tip for CR4704 replaced no change.
> >
> > The regulator and H.O.T. test normal in circut this set still has the
> > electoltic in regulator circurt.. I have the regulator KIT but it
doesn't
> > have all the symptoms, ie usually the regulator blows. The customer
said
> it
> > just stopped working.. Any ideas
> >
> >
> > Peter Oliver
> > Tucson Radio TV
> >
> >
> >
> >
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