[TechAssist] Re: RCA CTC185AB Dead F25216WT may 1996

If you have 5V on pin 2 of the micro (the reset line) then this will not be
your problem. I do have a training manual that may give you some help and
portions of the schematic. I will send it to your hotmail account, it is
just over 1Mb hope you have the space.

hth

Jason Mouton
Mouton's Electronics
1116 Center St.
New Iberia, LA 70560
337-364-1641 Phone/Fax
moutons@xxxxxxxxxxxxxxxx


----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, October 30, 2002 10:26 PM
Subject: [TechAssist] Re: RCA CTC185AB Dead F25216WT may 1996


>
> I need to make shure we are on the same page C3126 seems several steps
> removed. On this set (going by board markings) pin 2 goes to r120 that
feeds
> to the collector of Q3101 the base of this transistor has 0.02V which
should
> be below turn on voltage (0.6V typ min). The base goes to R135 that goes
to
> the collector of Q102 (has 0.02V) C126 is off the emmiter of Q102 there
does
> not seem any leakage at that point. C126 appears to be in the emmiter
circut
> of Q102...???  (the Tuner input is still isolated from chassis ground too)
>
>
> Peter Oliver
> Tucson Radio TV
>
>
> From: "Mouton's Electronics" <moutons@xxxxxxxxxxxxxxxx>
> Reply-To: techassist@xxxxxxxxxxxxx
> To: <techassist@xxxxxxxxxxxxx>
> Subject: [TechAssist] Re: RCA CTC185AB Dead F25216WT may 1996
> Date: Mon, 28 Oct 2002 09:24:09 -0600
>
>
> I have had a similar problem and found more than 5 or 6 times it was in
the
> reset circuit. Check Q3101 (base), it is a surface mount near the Micro
> (collector connects to pin 2 of the micro through R3120 surfacemount). If
is
> has any base voltage the likely cause is C3126 surfacemount (base voltage
> should be 0). Remove the capacitor and clean the glue under it also
replace
> the capacitor. It always checks good but you should put a new one anyway.
>
> Hope this helps
>
> Jason Mouton
> Mouton's Electronics
> 1116 Center St.
> New Iberia, LA 70560
> 337-364-1641 Phone/Fax
> moutons@xxxxxxxxxxxxxxxx
>
>
> ----- Original Message -----
> From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, October 27, 2002 5:54 PM
> Subject: [TechAssist] Re: RCA CTC185AB Dead F25216WT may 1996
>
>
>  >
>  > 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
>  >  >  >
>  >  >  >
>  >  >  >
>  >  >  >
>  >  >  > _________________________________________________________________
>  >  >  > Unlimited Internet access for only $21.95/month. Try MSN!
>  >  >  > http://resourcecenter.msn.com/access/plans/2monthsfree.asp
>  >  >  >
>  >  >  > ------------------------------------------
>  >  >  > To REMOVE your email address, click here:
>  >  >  >   http://www.tech-assist.org/unsubb.html
>  >  >  > To CHANGE your email address, click here:
>  >  >  >   http://www.techassist.net/forms/change.html
>  >  >  > ------------------------------------------
>  >  >  > ***NEW*** Tips Added Instantly!!!***
>  >  >  > Submit Repair Tips here:
>  >  >  > http://www.tech-assist.org/secure/tip/
>  >  >  >
>  >  >  >
>  >  >
>  >  >
>  >  > ------------------------------------------
>  >  > To REMOVE your email address, click here:
>  >  >    http://www.tech-assist.org/unsubb.html
>  >  > To CHANGE your email address, click here:
>  >  >    http://www.techassist.net/forms/change.html
>  >  > ------------------------------------------
>  >  > ***NEW*** Tips Added Instantly!!!***
>  >  > Submit Repair Tips here:
>  >  > http://www.tech-assist.org/secure/tip/
>  >  >
>  >  >
>  >  > _________________________________________________________________
>  >  > Protect your PC - get McAfee.com VirusScan Online
>  >  > http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963
>  >  >
>  >  > ------------------------------------------
>  >  > To REMOVE your email address, click here:
>  >  >   http://www.tech-assist.org/unsubb.html
>  >  > To CHANGE your email address, click here:
>  >  >   http://www.techassist.net/forms/change.html
>  >  > ------------------------------------------
>  >  > ***NEW*** Tips Added Instantly!!!***
>  >  > Submit Repair Tips here:
>  >  > http://www.tech-assist.org/secure/tip/
>  >  >
>  >  >
>  >
>  >
>  > ------------------------------------------
>  > To REMOVE your email address, click here:
>  >    http://www.tech-assist.org/unsubb.html
>  > To CHANGE your email address, click here:
>  >    http://www.techassist.net/forms/change.html
>  > ------------------------------------------
>  > ***NEW*** Tips Added Instantly!!!***
>  > Submit Repair Tips here:
>  > http://www.tech-assist.org/secure/tip/
>  >
>  >
>  > _________________________________________________________________
>  > Choose an Internet access plan right for you -- try MSN!
>  > http://resourcecenter.msn.com/access/plans/default.asp
>  >
>  > ------------------------------------------
>  > To REMOVE your email address, click here:
>  >   http://www.tech-assist.org/unsubb.html
>  > To CHANGE your email address, click here:
>  >   http://www.techassist.net/forms/change.html
>  > ------------------------------------------
>  > ***NEW*** Tips Added Instantly!!!***
>  > Submit Repair Tips here:
>  > http://www.tech-assist.org/secure/tip/
>
>
> ------------------------------------------
> To REMOVE your email address, click here:
>    http://www.tech-assist.org/unsubb.html
> To CHANGE your email address, click here:
>    http://www.techassist.net/forms/change.html
> ------------------------------------------
> ***NEW*** Tips Added Instantly!!!***
> Submit Repair Tips here:
> http://www.tech-assist.org/secure/tip/
>
>
> _________________________________________________________________
> Protect your PC - get McAfee.com VirusScan Online
> http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963
>
> ------------------------------------------
> To REMOVE your email address, click here:
>   http://www.tech-assist.org/unsubb.html
> To CHANGE your email address, click here:
>   http://www.techassist.net/forms/change.html
> ------------------------------------------
> ***NEW*** Tips Added Instantly!!!***
> Submit Repair Tips here:
> http://www.tech-assist.org/secure/tip/
>


------------------------------------------
To REMOVE your email address, click here:
  http://www.tech-assist.org/unsubb.html
To CHANGE your email address, click here:
  http://www.techassist.net/forms/change.html
------------------------------------------
***NEW*** Tips Added Instantly!!!***
Submit Repair Tips here: 
http://www.tech-assist.org/secure/tip/

Other related posts: