a hum comming from power supply donkey kong stock

[STEVESPEEZE]

A Got a mild hum coming from the power supply in my donkey kong cab.
any thoughts?

[STEVESPEEZE]

ok ill answere myself
I found another 5 bux worth of quarters under the power supply.. I took it out and checked all the grounds, changed the chord, pulled the sound board checked all the SOTTER connections.
uh... checked my wires..  still got a slight hum.
go figure.
will recapping the sound board and vid board on the left (the two on the side of monitor) help?
or could it still be the power supply.. also theres what looks like a tiny isolation transformer between those two small boards does that go bad?

[arcadefan1985]

I was waiting for someone to answer this. I rebuilt my DK and it has a slight quivering hum to it and always has had. What does yours sound like?
I just turned the volume down a little. When I have all the games on I can't hear it.

[Anunaki]

I had a humm in mine that is gone since I recapped the Sanyo (incl soundboard)

don't think it came from the PSU though

[STEVESPEEZE]

I had a humm in mine that is gone since I recapped the Sanyo (incl soundboard)

don't think it came from the PSU though

recapped the monitor,  I have the 2 pcb board dk..
it has those two side cards next to the monitor I did not recap those yet.
the hum does come through the speakers

[Anunaki]

I did the complete kit incl transistors on th soundboard

Vanaf mijn mobiel verstuurd

[John's Arcade]

I was waiting for someone to answer this. I rebuilt my DK and it has a slight quivering hum to it and always has had. What does yours sound like?
I just turned the volume down a little. When I have all the games on I can't hear it.

The audio amp is to the left of the monitor and where the speakers plug-in. You should replace the caps on that sound booard.

[iankellogg]

if you buy twisted quaters rebuild kid it has new amps as well as the caps for audio

[STEVESPEEZE]

I was waiting for someone to answer this. I rebuilt my DK and it has a slight quivering hum to it and always has had. What does yours sound like?
I just turned the volume down a little. When I have all the games on I can't hear it.

The audio amp is to the left of the monitor and where the speakers plug-in. You should replace the caps on that sound booard.

http://i1203.photobucket.com/albums/bb392/turbografx/1932428_785271034834682_1390197116_n-1.jpg
Im on it.

[John's Arcade]

I should mention that there is no guarantee that this will fix it. But, it's where you should start.

I have read a lot about DK games humming.

[arcadefan1985]

I was waiting for someone to answer this. I rebuilt my DK and it has a slight quivering hum to it and always has had. What does yours sound like?
I just turned the volume down a little. When I have all the games on I can't hear it.

The audio amp is to the left of the monitor and where the speakers plug-in. You should replace the caps on that sound booard.

Yea, I've rebuilt several ez20's and sound boards and my hum sounds like the bootup nintendo sound that is probably coming from the pcb set.

[STEVESPEEZE]

I should mention that there is no guarantee that this will fix it. But, it's where you should start.

I have read a lot about DK games humming.

I don't have my hopes too high but it would be nice. ive had nothing but luck with this machine so far.
plus currently the find count is at 188 bux.
Even if the hum don't go away with these caps at least I know the caps were changed.

[STEVESPEEZE]

I was waiting for someone to answer this. I rebuilt my DK and it has a slight quivering hum to it and always has had. What does yours sound like?
I just turned the volume down a little. When I have all the games on I can't hear it.

The audio amp is to the left of the monitor and where the speakers plug-in. You should replace the caps on that sound booard.

Yea, I've rebuilt several ez20's and sound boards and my hum sounds like the bootup nintendo sound that is probably coming from the pcb set.

It actually improved when I put a new power chord and cleaned the power supply.

[STEVESPEEZE]

We can close this case.. no more hum