K7400 high vid+ and dim picture.

kcarpenter

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B+ is dead on 119V.

I have to turn the screen all the way up on the flyback to see a dim picture with raster lines.

Measured vid b+ and came up with 195V!!

looked at D310 and R310, R811. All good.

I have reflowed any suspect solder joints, new flyback installed, and still vid B+ is high and screen has to be turned up all the way to see dim raster.

Any ideas?
 
Solved

Buffet you called it. Bad Monitor.

Picked up a 25" TV from the Goodwill for $20 and now I'm back in business.

Always a reason why games are dumped at auction I guess,
 
Buffet you called it. Bad Monitor.

Picked up a 25" TV from the Goodwill for $20 and now I'm back in business.

Always a reason why games are dumped at auction I guess,

cool.

glad you got it figured out and fixed.

yes you would not believe why some games are sold at auction.

Peace
Buffett
 
glad it is working but don't understand the high vid b+...I think it should be around +140 or something. Matter of fact, I can't find anything that says what the b+ and vid b+ should be.

I had similar issue (dim picture). Reactivated/restored guns and had to replace one of the blue transistors, q503, on neck board. Just put the monitor back in cab like 45min ago. Looks good. Also wired up a fan to blow on neck board transistors.
 
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