| Author |
Message |
stereodave70
Joined: 15 Sep 2006
Posts: 138
Location: Bloomington, IL
|
| Posted: Thu May 08, 2014 12:09 am Post subject: Sony G-70, Blue tube is on, but not helping? |
|
|
Picture seems bland, not very bright. Then I noticed if I block off the blue all together it makes no difference to the picture at all. The blue tube looks to be lit, just not very bright. Any help?
_________________
Be carefull what you wish for...sometimes you just might get it !!!
|
|
| Back to top |
|
 |
Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
|
| Posted: Thu May 08, 2014 12:49 am Post subject: |
|
|
|
Bad tube, bad PA board that supplies the G2 to the tube, or bad CRT socket/video amp. about the only one you can test is the CRT socket, by swapping neck boards between tubes. All three are identical.
|
|
| Back to top |
|
|
stereodave70
Joined: 15 Sep 2006
Posts: 138
Location: Bloomington, IL
|
| Posted: Fri May 09, 2014 1:37 am Post subject: |
|
|
Ok, I swapped the neck board with the green and no difference. Problem is still in the blue. What do I need to check next ?
_________________
Be carefull what you wish for...sometimes you just might get it !!!
|
|
| Back to top |
|
|
Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
|
| Posted: Fri May 09, 2014 2:42 am Post subject: |
|
|
Not much you can do at this point except send me the PA board and the RGB input board for testing/repair.
Actually, wait, if you pull out the PA board, you'll see three single connector wires next to each other, blue green and red. Swap the blue and green around. DO NOT turn on the set with one of those wires disconnected. See if the problem changes to the green. I doubt it though.
|
|
| Back to top |
|
|
|
|
