Hey all,
If anybody knows about the Turbo Express, please chime in (broken, I know you're a PCE/Turbo guy)..
Here's the issue, I've replaced all the capacitors on my friend's Express, and after the caps were replaced, a little bit of solder somehow got stuck between some pins of one of the chips causing the screen to go out of wack.
I removed the solder and the fuse blew, so I then put a temporary replacement (1.5A SNES pico fuse) and it worked FLAWLESSLY... but it's still 0.5A higher than the recommended fuse (125v 1A fuse)..
So I got the fuse needed, replaced the 1.5A with the 1A.. and now the backlight doesn't turn on.........
I tested a few points on the board and I'm stumped.. I've checked the legs on the blue ballast cap, one side gets voltage and the other doesnt.. so I thought replacing it would work... nope, same symptom
Now I'm thinking that it's the transformer, but I'm not sure how to diagnose a transformer (at the moment)..
I've checked Q900/Q901 and whatever could possibly drive the transformer, everything looks good...
I did notice that one of the traces on the board goes to one leg of the ballast cap, and connects to the transformer.. that pin on the transformer is dead...
My guess, it's not a ground..
If anybody can chime in, PLEASE DO!!!
If anybody knows about the Turbo Express, please chime in (broken, I know you're a PCE/Turbo guy)..
Here's the issue, I've replaced all the capacitors on my friend's Express, and after the caps were replaced, a little bit of solder somehow got stuck between some pins of one of the chips causing the screen to go out of wack.
I removed the solder and the fuse blew, so I then put a temporary replacement (1.5A SNES pico fuse) and it worked FLAWLESSLY... but it's still 0.5A higher than the recommended fuse (125v 1A fuse)..
So I got the fuse needed, replaced the 1.5A with the 1A.. and now the backlight doesn't turn on.........
I tested a few points on the board and I'm stumped.. I've checked the legs on the blue ballast cap, one side gets voltage and the other doesnt.. so I thought replacing it would work... nope, same symptom
Now I'm thinking that it's the transformer, but I'm not sure how to diagnose a transformer (at the moment)..
I've checked Q900/Q901 and whatever could possibly drive the transformer, everything looks good...
I did notice that one of the traces on the board goes to one leg of the ballast cap, and connects to the transformer.. that pin on the transformer is dead...
My guess, it's not a ground..
If anybody can chime in, PLEASE DO!!!