[TechAssist] Re: GE ctc-175a chassis

There may be a short between the G2/Focus Grids in the Pix Tube.
Does the Brightness change when the Focus is adjusted,or does
the Focus change when the G2 is adjusted ???

If so,with set unplugged,remove CRT PCB from Pix Tube.
Ground G2 pin of CRT.
Using a jumper wire connected to a WELL INSULATED Screwdriver,
and the other end connected to the Focus Pin of the CRT,turn set on
to let HV build. Unplug set and Discharge Anode to Focus pin with 
screwdriver.

Peggs

At 01:33 PM 1/31/03 -0800, Alvin Rose wrote:
>
>Hi Guys
>We have a CTC-175a chassis which comes on ok first but
>then the screen goes dark..Screen voltage drops from 335
>down to 65 volts..changed the 1000  HV cap on crt board.
>No change..Remove crt from socket and voltage goes back to
>400 volts  plug it back on and it wotks for a short time and then
>
>goes dark again.. Hi voltage is 21 kv and does not change.
>Suspect Crt..any suggestions appreciated
>Alvin Rose
>Radio & Tv Centre
>Marystown, Nl
>
>------------------------------------------
>Submit A Repair Tip For Everyone Here:
>http://www.tech-assist.org/secure/tip/main.html
>------------------------------------------
>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
>
>
Peggs' Electronics
1519 West 2nd Street
Owensboro,KY 42301
270-926-4968
fax 270-686-7399
peggs@xxxxxxxxxxxxxx
------------------------------------------
Submit A Repair Tip For Everyone Here:
http://www.tech-assist.org/secure/tip/main.html
------------------------------------------
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

Other related posts: