What is this called and should it be humming

Cade

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This obviously has something to do with the power to the cabinet (tutankham). Its making a low humming noise. is this normal? Also my screen has some greenish yellow lines running accross it. could this be related or is it most likely a board issue?
 
Is the AC filter back there by your power switch wired up or bypassed? Sometimes they go bad, and may be causing your issue...
 
The filter has a plug on it but i cannot find anywhere to plug it in. i got this machine real cheap from a fellow member and it has definitely had some wiring altered in its long years on this earth. where is that filter supposed to plug in? All ive done is remove wire nuts and solder the connections instead so far.
 
That would indicate a loose bobbin, which I've never come across in this style xfmr. They will vibrate a certain amount, and if the brackets bolted to it are loose enough to rattle around, it will act like an electromechanical buzzer. Pretty common....
 
At the bottom of your picture, it shows two large caps. These could be the
filter caps for the power supply and may be the problem.

There may also be a bad electrolytic in your monitor causing the lines on the
screen. A cap kit may need to be installed to fix that.

With all other noise quieted, these transformers do make a noticeably
low hum noise.
 
Right. A hum and a buzz are different things. Hum sounds muted and muffled....just a low steady tone. A buzz is a sharper sound, similar to putting some small metal object on a speaker cone while its in operation. A buzz would indicate something vibrating mechanically. A faint hum is normal.
 
it's definitely a buzz. I'll check the bolts, and look into a cap kit. I am absolutely green to this whole "giant video game cartridge in a box" hobby. It's fun. Nice break from working on cars in the heat. Thanks for the advice and the patience.

that said, are there certain cap (capacitor?) kits for certain games or do most of them use the same kit? someone point me the right way here.
 
it's definitely a buzz. I'll check the bolts, and look into a cap kit. I am absolutely green to this whole "giant video game cartridge in a box" hobby. It's fun. Nice break from working on cars in the heat. Thanks for the advice and the patience.

that said, are there certain cap (capacitor?) kits for certain games or do most of them use the same kit? someone point me the right way here.

99% of the time the answer to the above question on this board will be:

http://therealbobroberts.net/


The site isn't pretty but he is very reliable. I recommend doing a little research before you buy a kit and go at it... whatever the game is that you're attempting to repair. And I'd definitely make sure your transformer is not vibrating using the link someone previously posted.

Some other good resources: (not necessarily for caps but commonly visited and recommended.)

http://www.twistywristarcade.com/
http://twistedquarter.com/
http://www.phoenixarcade.com/
http://www.thisoldgame.com/
http://www.jammaparts.net/
http://www.arcadeshop.com/
http://www.t-molding.com/
http://www.backtothearcade.com/
http://www.gameongrafix.com/
http://www.arcadeoverlays.com/

And many more...
 
Happy to say the game works 100% after a board swap. i think i'll take a shot fixin this one anyway for practice. thanks for the advice and great links guys
 
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