EDIT: MS9-29T fixed as of 4/16/20. Project log in spoiler:
Upon power-up, I hear static filling the tube. But there is no neck glow. No image on screen. Reflowed solder around the high voltage area. Still nothing. I do plan on fully re-capping this chassis. But wondering if there is a quick fix for this.
Also at CN102. Anyone know what connector and series this is? Or an alternate series with the same pitch can be used?
Symptom:
- Dead - electrical static can be heard filling the tube upon power up, then monitor quickly can be heard discharging. No image is ever displayed on screen. No neck glow.
- Replaced LA7837 - still dead
- Replaced LA7853 - still dead but at this step, I errantly removed solder around HOT and did not reapply
- Reapplied solder around HOT and recapped vertical circuit and she fired up again!
- Finished recapping entire chassis - monitor still randomly goes into OCP and shuts down
- Swapped neckboard with MS9-29SU - monitor still randomly goes into OCP and shuts down
- Swapped neckboard back - monitor still randomly goes into OCP and shuts down
- Upon advice from gunblade, reflowed solder in high voltage area
- Removed filter cap (C911) from MS9-29SU and placed it back in MS9-29T - monitor stayed on throughout 2-hour soak test.
- Attempting to calibrate monitor pots on chass produced a screen jump or flash depending on what pot was touched
- Noise on screen is observed
- Reflowed solder on all chassis pots (including B+ pots), reflowed RGB header, reflowed visible oxidized joints
- Grounded chassis frame properly
- Fired monitor back on, noise is gone, image no longer jumps or flashes upon touching pots, monitor stays on throughout 1-hour soak test
Also at CN102. Anyone know what connector and series this is? Or an alternate series with the same pitch can be used?
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