[TechAssist] Re: RCA CTC185AB Dead F25216WT may 1996

Pin 20 of u1001 reads 4.8V

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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