Fixing/Replacing a Hantarex Power Supply

remoteboy

Hi,

I've got a JAMMA cab with a Hantarex MTC9000 monitor and a Hantarex US250 power supply. The power supply isn't outputting the correct voltages and needs to be repaired/replaced. I'm not too keen on repairing it (power supplies freak me out), so I'll probably replace it.

I can pick up a secondhand one on eBay handy enough but, given the chance that it too will go after time I'm wondering if it wouldn't make more sense just to put something more modern instead like this -

http://www.jammaboards.com/store/15a-switching-power-supply-110w/prod_251.html

Only worry is I'm not sure if it will power the monitor or if I need another power supply for that.

Any comments/ideas welcome.

Thanks.

R.

Myrddin

remoteboy wrote: »

Hi,

I've got a JAMMA cab with a Hantarex MTC9000 monitor and a Hantarex US250 power supply. The power supply isn't outputting the correct voltages and needs to be repaired/replaced. I'm not too keen on repairing it (power supplies freak me out), so I'll probably replace it.

I can pick up a secondhand one on eBay handy enough but, given the chance that it too will go after time I'm wondering if it wouldn't make more sense just to put something more modern instead like this -

http://www.jammaboards.com/store/15a-switching-power-supply-110w/prod_251.html

Only worry is I'm not sure if it will power the monitor or if I need another power supply for that.

Any comments/ideas welcome.

Thanks.

R.

When you say it's not outputting the correct voltage, have you checked the readings with a multimeter? If it's a problem with the 5v, they are normally adjustable.

Mitchomagic

Switcher is the way to go,but if you need a US250 I have spares

remoteboy

EnterNow wrote: »

When you say it's not outputting the correct voltage, have you checked the readings with a multimeter?

Yeah - I'm getting 0.76v where I should be getting 12v and 4.3v where I should be getting 5v. I recently disassembled the cab to move it up two flights of stairs. When I rebuilt it, I powered it with no JAMMA board and no monitor connected and there was a horrible high pitched whine - I think I blew something important. I replaced the fuses but it didn't make any difference.

Mitchomagic wrote: »

Switcher is the way to go,but if you need a US250 I have spares

Hi Mitch, if you're selling a US250 I'd definitely be interested. If I do decide to go down the switcher route in the future, would I need a separate power supply for the monitor or would the switcher handle that too?

Myrddin

remoteboy wrote: »

Yeah - I'm getting 0.76v where I should be getting 12v and 4.3v where I should be getting 5v. I recently disassembled the cab to move it up two flights of stairs. When I rebuilt it, I powered it with no JAMMA board and no monitor connected and there was a horrible high pitched whine - I think I blew something important. I replaced the fuses but it didn't make any difference.



Hi Mitch, if you're selling a US250 I'd definitely be interested. If I do decide to go down the switcher route in the future, would I need a separate power supply for the monitor or would the switcher handle that too?

Powering without a jamma board shouldn't be an issue (to my knowledge). Is your monitor powered off the PSU or off mains (my one is powered off mains Hantarex Polo 25"). If your monitor is the psu powered type though, the problem could lie there, and simply dropping a new psu in could cause the same thing to happen.

Mitch will have a far better understanding of it than me, but your 5v issue is more an adjustment than a problem I'd imagine. The 12v is a different story though.

sundodger5

If it is the original power supply i would check to see if it is putting out the correct voltage to run the monitor. If that is good i would leave it as is and put in a switcher to run the board etc. Cheap fix

remoteboy

Hi Sundodger - that's not a bad shout.

purplec

The us 250 usually out puts the jamma voltage and the screen voltage from mains
ie

240 in (outputs 110 for the screen and 12 volt and 5 volt and - 5volt for the switcher.

So if you bin the US250 you may need a step down transformer to run the screen.

Hantarex9110 chassis needs 110 for power & 220 for degause

hope this helps

remoteboy

Hi Purplec,

Good to know. I think short term I'd do as sundodger suggested and leave the US250 in place to power the screen (seems to be working fine) and just use the switcher to drive the JAMMA side of things.

Best Regards.

R