Main > Monitor/Video Forum
Battlezone Deflection PCB
ChadTower:
--- Quote from: boardjunkie on March 23, 2011, 02:36:53 pm ---You always work from def amp outputs back toward the input on vector monitors. From most likely to fail (output transistors) to least likely...
When you replace those output transistors, make sure you use mica insulating spacers (and fresh heatsink goop) between the transistor and the frame. The transistor mounting plate *cannot* contact the monitor frame....
--- End quote ---
A couple of weeks ago I was working on my Red Baron with the monitor on the ground behind the cabinet playing video. I dropped a screwdriver and it briefly shorted an output tranny to the frame. The spark was enough to shoot the screwdriver over the edge of the monitor and a foot away. Nice big yellow CRACK spark. Luckily it didn't fry the transistor but man did that get the point home. ;D
boardjunkie:
No that won't hurt the transistor, but I'm s'prised the fuse for that voltage rail didn't pop.....
HaRuMaN:
Looks like I'm going to have to pull the monitor to get to those transistors. :banghead: I was hoping to avoid that. Oh well...
HaRuMaN:
Replaced the case mounted transistors, F600 keeps blowing... :badmood:
HaRuMaN:
It's actually a WGV2000, btw...
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