[TechAssist] Re: F27318, CTC203AA5.no power on,5V stby OK, +139V source low]

From: "al m" <ampm@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Date: Tue, 10 Sep 2002 08:29:56 -0400

Phil did you scope the 95V to see if it's clean.
al marquardt
ampm@xxxxxxx


----- Original Message -----
From: "Phil Bader" <philbad@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, September 09, 2002 6:45 PM
Subject: [TechAssist] F27318, CTC203AA5.no power on,5V stby OK, +139V source
low]


>
>
>
>
> Dead. plug in, hear the chirp of the smps starting. The main regulated
> source that goes to the fly/HOT  in standby is low: +96VDC instead of
> the typical +139VDC. I isolated the fly input.Same, so HV area not
> loading it. Changed every transistor in the smps with OEM.No help. It
> did have one resistor in the smps open: R14107 (43 ohm,1/4W # 244214).
> Replaced it.Push power and nothing.I find good +5V stby,tho. Changed the
> opto-iso IC U14101. Still dead.
> Wonder what is causing this lower than normal 139 source to be 95V and
> unresponsive to turn on. The other shop said he swapped the gemstar
> board before the tech-friend carried it to me. Need input! arggh.
> Phil Bader
> --
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: philbad@xxxxxxxxxx
>
> ------------------------------------------
> 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/

Follow-Ups:
- [TechAssist] Re: F27318, CTC203AA5.no power on,5V stby OK, +139V source low]
  - From: Phil Bader

References:
- [TechAssist] F27318, CTC203AA5.no power on,5V stby OK, +139V source low]
  - From: Phil Bader

[TechAssist] Re: F27318, CTC203AA5.no power on,5V stby OK, +139V source low]

Other related posts: