Hantarex PSU didnt work and make noise..

[eurotronic]

Hello guys,
im working on my Super Hang On who had a Hantarex PSU. Model US250.

when i turn on the cab it start to make a high pitched sound that didnt stop until i turn it off.
Also the monitor didnt light up, so i assume there is no juice going out of it.

Did you ever exprerience this kind of problem with an hantarex psu? Those the sound mean something? 
I cant find anything about a sound code for problem in the PSU's manual.


Any help would be very much appreciate.

David

[Etienne MacGyver]

does it also give that sound when everything is disconnected but the 220V ?

[eurotronic]

nope,it shut.
 but it fade like when your hard shut off an amp.

[level42]

Hah, one of my oldest arcade repairs ever......januari 2006:

http://forum.arcadecontrols.com/index.php/topic,48087.msg466173.html#msg466173


I had a high tone coming from the PSU though, not from the speakers....

[eurotronic]

Thanks for the answer,andré!

The noise come indeed from the psu itself not the speakers.

I red your post on byoac but i m still confused.
Is the fan the problem? Should i change it or is this some other thing?

Thanks again.

[level42]

Well, in my case the fan was a 12V version. However, it was connected to a +5V output (this output looked like a jumper on the PSU, think it was meant for an indicator LED or something...

From the PC modding scene I know you can run a 12V fan at 7V (by connecting it between +12V and +5V, this gives +7V to the fan, it will just run slower/more silent) but 5V.....it very low to keep a +12V fan moving...

Anyway, I think because of this plus the fan getting dusty/old it presented a too high load for the +5V and blew a thyristor on the PSU. When I disconnected the fan and replaced the part the machine worked fine. I stupidly reconnected the fan (didn't know it was causing the part to blow yet) and when I started up, the same squeeling sound from the PSU again and no game.
So then I knew I'd had to replace the fan which I did, and I connected it to the +12V instead.

See my original thread here (even older, from 2005 ): http://forum.arcadecontrols.com/index.php/topic,46549.0.html

I miss that machine it was a lot of fun to play ! It also looked great and the UK version has much nicer artwork than the US one IMHO:

[eurotronic]

Well, i think i burn it up..

I removed the fan, open the case but some kind of clamp was holding a transistor directly in the case,
and when i tried to remove it, it jump right in the component and make a big flash and bang!
I screwed up on this one.. What kind of idiot attach a transistor to the case anyway?!..

Now the psu is not making noise, it's not making anything in fact, it just lie there and piss me off..

So i think maybe it time to change power supply, the big problem is that it also deliver the 135v for the monitor.

i found some "220 to 110v converter" but will it be ok for the monitor? 110v isnt a bit weak ?
can i use this for replacement? http://www.befr.ebay.be/itm/200828618677?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

My monitor is a mtc9000 by the way. From the old Andre's post i can see that the monitor can work from 115v-142v, but the converter is 110v..

Can i use a "220v to 110v converter" to power up an MTC9000?


Thanks³

[level42]

NO ! Because if I was correct BITD (I was a newbie then) the monitor ran on 135V DC, and a transformer from 230V to 110V will provide AC !!

And uhm.....about idiots..........better not to open/remove/move stuff while powered on.......

[eurotronic]

Ok thanks.
Do you know where i can find this kind of transformer?

The PSU was unplugged when i did my stupid move, but i think the metal bits fell in the capacitors area.

[italiandoh]

NO ! Because if I was correct BITD (I was a newbie then) the monitor ran on 135V DC, and a transformer from 230V to 110V will provide AC !!

The MTC 9000 can run either on AC or DC voltage. Read the manual.

Matteo

[baritonomarchetto]

Exactly. In addition it's almost possible that it will work with 110V (i have a MTC900 and a MTC900E working flawlessy with that voltage. Being MTC 9000 a direct replacement i would bet that 110V AC will be sufficient  )

BUT

you must be sure the one you have in hand is a isolation transformer and not a step down converter or you will fry it!