- Joined
- Mar 19, 2011
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- 793
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- 36
Client asked me to come take a look at his Gauntlet Dark Legacy cabinet because he doesn't fool with monitors. Client turned out to be "Coindropper" who apparently bought this pretty nice cabinet from "Bottlejunkie" for a good price. Monitor apparently was super dark (even adjusted to max) and worked intermitently.
So I open it up, check the power coming in and listen for anything from the monitor chassis. Nothing, nadda, no neck glow, but the power coming in checks out. I run some checks on the tube with my B&K 470, no shorts but the red color gun is reading bad. Cleaned and Balanced all the guns and now everything had a good reading and didn't require color tracking. So I pull the chassis out and inspect for dry solder joints.......someone had reflowed it in the past and left a lot of the greasy looking burnt solder flux everywhere, but otherwise everything looks ok. So I start running checks on fuses, diodes, the larger resistors responsible for no power ups and dark screens. Everything appears to be fine, so I go to desolder the HOT and run checks. Shorted across one leg......was thinking flyback may also be responsible for a lot of things.
So right now I've ordered a new flyback and HOT (C3688) from Bob Roberts.
Any input? Suggestions to what may be causing the dark screen?
This board seems to have the required upgrades to hardware.
So I open it up, check the power coming in and listen for anything from the monitor chassis. Nothing, nadda, no neck glow, but the power coming in checks out. I run some checks on the tube with my B&K 470, no shorts but the red color gun is reading bad. Cleaned and Balanced all the guns and now everything had a good reading and didn't require color tracking. So I pull the chassis out and inspect for dry solder joints.......someone had reflowed it in the past and left a lot of the greasy looking burnt solder flux everywhere, but otherwise everything looks ok. So I start running checks on fuses, diodes, the larger resistors responsible for no power ups and dark screens. Everything appears to be fine, so I go to desolder the HOT and run checks. Shorted across one leg......was thinking flyback may also be responsible for a lot of things.
So right now I've ordered a new flyback and HOT (C3688) from Bob Roberts.
Any input? Suggestions to what may be causing the dark screen?
This board seems to have the required upgrades to hardware.
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