[TechAssist] Re: RCA F26051, CTC167, small, dark, blurry picture.

  • From: Wayne Vanaman <Wayne@xxxxxxxxxxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Tue, 29 Mar 2005 07:23:39 -0600

Kevin:

Two thoughts.  CR4120 on q4101e appears to be a reference diode. 
Second, if the set is a "smokers" set, R4117 could be contaminated.  The 
schematic says it is sealed, but I don't know how well.

 From RCAs FixFinder:
R4118 had two entries for low B+



Wayne Vanaman
Omega Electronics
6904 W Fairfield Dr
Pensacola, Fl.  32506-3310

Wayne@xxxxxxxxxxxxxxxxxxxxx
WWW.PensacolaTVRepair.Com

850-456-5995 voice
850-458-6369 fax


Kevin wrote:
> This is the last kick at the can.  Picture is fine when first turned on,
> but slowly the picture comes in from the top and bottom and sides, and
> gets dark and blurry.  B+ starts off at 129 volts (correct from SM) and
> slowly drops to 116 volts after about 2 hours (sometimes more, sometimes
> less).  I replaced SCR4101, HOT Q4401, and 4 transistors (Q4101/2/3/4)
> in the error detection circuit.  I also checked all the caps in the P/S
> and horizontal and used half a can of cold spray.  Is there anything
> else I can check for?  I am suspecting the flyback or picture tube but I
> don't have a working CTC167 chassis to confirm my diagnosis.  Does
> anyone have a working CTC167 chassis?  Thanks.    
> 
> Kevin Wilks
> Kevin's TV & Video Repair
> Penticton BC Canada
> kevintv@xxxxxxx 
>  
> 
> 
> -----------------------------------------------------------------------------
> This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
> Lost Password: http://www.tech-assist.org  and select "Login Problems?".
> Email Archives: //www.freelists.org/archives/techassist/
> 
> 
-----------------------------------------------------------------------------
This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
Lost Password: http://www.tech-assist.org  and select "Login Problems?".
Email Archives: //www.freelists.org/archives/techassist/

Other related posts:

  1. Home
  2. techassist
  3. Archive
  4. 03-2005