Cab monitor on the fritz.

[mortified_penguin]

Yesterday morning I turned on my dynamo cab to play some DonPachi and after five minutes or so the picture got all blurry. Swapped out the board for another game, same thing. Fiddled around with the monitor adjustment knobs to no avail. Now it goes blurry about a minute after powering on and I have these vertical lines about one inch apart that I can't get rid off.

Checked all the connections and nothing was loose or exposed. One thing I did notice was that the fan on the power supply isn't spinning, plus It really stared warming up here this week. Over heating issue maybe?

[PC Engine Fan X!]

Might want to check your local Yellowbook pages undering the subject matter of "Arcade Game Distributors" and call around to see if an arcade game technician would be willing to come down to your place and give your arcade monitor a lookover and repair it on the spot. He might have to special order some parts if it needed be.

PC Engine Fan X! ^_~

[kernow]

Yesterday morning I turned on my dynamo cab to play some DonPachi and after five minutes or so the picture got all blurry. Swapped out the board for another game, same thing. Fiddled around with the monitor adjustment knobs to no avail. Now it goes blurry about a minute after powering on and I have these vertical lines about one inch apart that I can't get rid off.

Checked all the connections and nothing was loose or exposed. One thing I did notice was that the fan on the power supply isn't spinning, plus It really stared warming up here this week. Over heating issue maybe?

Faulty power supply maybe? You might get a bit more help and information PM'ing 'grantspain' on here or at arcadeotaku. If the cab's PSU is failing this will affect the monitor, so it could be something as simple as that. I sugges you talk to grant though, the guy knows his monitor tech. Perhaps get a few photos of the symptoms and post those up also. good luck

[jonny5]

if you dont have one, get yourself a multi-meter before you holler at grant....you will need it to troubleshoot the problem with him

and if anybody can sort you out, its SUPER GRANTSPAIN!!!!

[grantspain]

well i ain't that super but i reckon i can point you towards the problem.
now a lot depends on your chassis but the first thing i would be checking is for bad solder joints around the flyback transformer and also around the crt socket on the neck card of the monitor chassis
i would also check brightness pot and its circuit for bad connection,check the function of the smoothing cap on the neck card for leakage and adjust the screen volts and focus on the flyback

[dpful]

could it be a pault in the actual focus pot (on the flyback)? I have a monitor that has the focus changing on it's own slightly every once and a while (but not consistently)- and it just stopped doing it (I would adjust the focus knob every time).

[grantspain]

could it be a pault in the actual focus pot (on the flyback)? I have a monitor that has the focus changing on it's own slightly every once and a while (but not consistently)- and it just stopped doing it (I would adjust the focus knob every time).

yep i have seen that a few times as well

[mortified_penguin]

Once again your collective wisdom has me back blowing shit up. Replaced the crappy power supply why I was at it and all is right with the world. Thanks again everyone.

[mortified_penguin]

Dammit! Spoke too soon. Everything looks great until I shut the game off. Once I turn it back on everything is blurry again.