Hantarex Mon Polo Problem (possible LOPT)

[lozman]

Hi All,

I've just switched on my MAME cabinet for the first time in a few months and got a regular sort of electical clicking/popping sound every second or so. I took the back off and could see a bright spark every time it popped, and could smell an electrical burning smell.

The cabinet is based on a Killer Instinct upright, and has a 25" Hantarex Polo monitor in it. The details on the label are;

Hantarex Mon Polo 25" FS 220V   Mod: 02193270   Ch. Fam. 63200911

I don't know much about monitors, but from the research I have done it seems likely that the line output transformer has died. The spark is coming from a smallish unit at a point near where the long cable from the back of the tube is soldered (which I gather is the high voltage wire connected at the anode cap)?

Here's a video of it if that helps...



Can anybody say if this is a likely diagnosis, or offer an alternative theory? If more info is needed feel free to ask.

And then ultimately I would like some advice on the best way forward. I want to get this up and running again if possible by next weekend, and so need to move fast.

I live in Essex in UK so need to find either a repair place or a parts supplier that can source the right part and I'll find somebody local to help install it.

Last case scenario I could get a new monitor to replace it, but thatr will of course be way more expensive. Although I do like the idea of being about to run it up at high freqencies, rather than just 15khz, which I understand is posisble in some newer multi-frequency monitors, so any advice there would be appreciated also.

Thanks,
Lozman.

[grantspain]

yep looks like a classic flyback problem,i am down in kent

[lilshawn]

you could always try and mix up some epoxy and see if you can seal it up again...

if possible and still available - replace it

[lozman]

Ok, I tried to clean up the area on the transformer that had been arcing, but it still happened, so I replaced it with a new one and now my monitor is working pefectly again!!

Thank you so much Grantspain for your advice, and pointing me in the right direction for which part I needed and where to get it, without which I would probably still be struggling to figure it out!

Cheers,
Lozman.