Build Your Own Arcade Controls Forum
Main => Main Forum => Topic started by: UncleRoberto on January 04, 2015, 10:14:02 pm
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Firstly a big high to everyone! I hope this is the correct place to post my cry for help.
Apologies for a long story but it may help in the solution.
I purchased a working SF2 hyper cabinet which had been fantastic for a good few years. One day I cranked it on to find a green screen complete with game sounds.
Electronics are not my strong point so I began my endeavour to try to find someone to fix it. Living in the middle of New Zealand I found my options very slim, until one day a guy that fixes pokie machines said he could fix it! :D
He installed a new Wei-Ya 1220H Chassis stating it would solve all my problems but alas the same green screen.
He then pulled some wires out and said he would be back to try some other stuff. That was now 6 months ago and he's somewhat disinterested in returning making excuses when I rung.
So I thought bugger it I'll try myself - and researched what goes where.
I think it seems correct, but I no longer have power to the monitor and also it blows the 2amp fuse every time I plug it in (game music does work).
The only connection I was unsure about is the red double wire from the degaussing coil. It does seem to be designed to go where I put it though.
So any ideas I'm happy to try!
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I'm happy to post more pictures - even a video!
Thanks for any advice.
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Its kind of fun you learned to do the picture thing already, It took Jenn like FOREVER.... My thoughts here would be that tube is cooked, and if it is it will be quite unpredictable in terms of random (high) voltage so be careful messing around with it. Unground yourself as much as possible (Read the safety FAQ), There is something you can try however, Take a voltage reading on that iso transformer (Big square gold box looking thing) Right where it hooks to the black wires (going to your chassis) it kind of looks like a shorted connection in the pic.... Welcome to the forum,
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Thank you Jennifer for the advice. I'm reading 110v at that point which seems right?
I'm massively cautious around electricity - that's why I became a plumber because you only get wet when things go wrong.
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Yes that sounds correct, Next I would pull the neck board off, put a new fuse in and fire it up (without monitor hooked up) most likely the fuse wont blow at this point.... So, if that the case, you need a new tube (or a rejuve but that's a longshot 50/50 if it will work and then for how long?), However a 10pin Tv tube of the same size (measure diagonal across the screen) and the same horizontal output should work with that chassis...I think there is a thread in the monitor header forum On measuring horizontal ohms. And safely discharging the old tube for removal.... It sounds kind of hard and dangerous, but not so bad if you think about safey at all times.
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I unplugged everything as pictured (went overboard) and still the fuse blew, this may be a good sign that hopefully the monitor is still good :dunno
Maybe I have a faulty new board?
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That would be curious, since that was already replaced.... However, a bad tube could have destroyed your new board too, Last time that happened to me the metal frame for the tube got charged And I took ALOT of voltage by accidently touching it. So be really careful at this point and discharge all metal before you grab it.
(Just in case), ... There are some really sharp monitor dudes around here that can talk you though fixing that chassis, but I personally would consider it parts now, and just get another one since its still pretty common. or consider a new LCD.