I need the monitor gurus!

shawnbo42

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Okay, it's monitor time! Funny, as long as I've been in this business I never really messed around with monitor repair. I can remove a board and whatnot, but as far as actual board-level repair, I sadly have very little experience.
Anyways, sob story aside, it's time to learn! So what I have right now is an older megatouch that was converted to a touchmaster. Uses a Ducksan monitor mounted upside down, model number is cgm-1301. I have AC in, and the fuse checks out ok (in circuit). That's about as far as I know how to go from here. If someone can educate me, that'd be awesome. I can read schematics, but I need a little more education on basic electronics as to what components actually DO. (as in, what does a cap actually do in a circuit?)
Thanks in advance to any and all who read, and even better, take the time to help me out! It's really appreciated.
 
yup, it is a type 20. I'll give it a go, and thanks for the help. If I run in to any further issues, I'll post it up. Thanks again!
 
Isnt the type 20 monitor the one with the 2 75k resistors that open up and cause the monitor to go dead? I might be thinking of another model but I'm pretty sure its one of the CGA models. The 2 resistors are near the flyback if I recall right.

Matt
 
Isnt the type 20 monitor the one with the 2 75k resistors that open up and cause the monitor to go dead? I might be thinking of another model but I'm pretty sure its one of the CGA models. The 2 resistors are near the flyback if I recall right.

Matt

Mine was R801 in the PS circuit. I know sometimes the STK73410 at U801 goes bad, too...
 
Which monitor am I thinking of? For the life of me I cant find my notes.

Matt
 
Here's the schematic for the Type 20...

ducksantype20.jpg
 
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