K4900 neck no-glow

mochaman

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K4900 no neck glow

Did a recap and now no neck glow. Tried to look at older posts but I couldn't find anything to help me. What could be possible causes? Worked before recapping.
 
Last edited:
do you have any HV at all.

i would bet that you don't. check continuity on the 130v rail on the bottom of the chassis, all the way from R363 to pin 2 of your VR.

re-flow or re-jumper any bad/cold solder joints along the way.

Peace
Buffett
 
do you have any HV at all.

i would bet that you don't. check continuity on the 130v rail on the bottom of the chassis, all the way from R363 to pin 2 of your VR.

re-flow or re-jumper any bad/cold solder joints along the way.

Peace
Buffett
Thanks. I am new to this. Bad solder joints. Getting closer to finishing this one. Gonna try a game now. Picture comes up. Need some fine tuning I guess. Has blue lines across screen.
 
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glad it works now.

cold solder joints are the biggest downfall for a 4900.

the blue lines are probally from your screen nob on the fly being up to high.

to fine tune it set all the controls/pots to their centers so you have a place to start. even on the neck board.

adjust your screen brightness on the fly first and then fine tune it with your brightness pot.

Peace
Buffett
 
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