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virtual_on

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Providence, Rhode Island
I have a bit of a strange issue with my recently purchased Sega Astro City cabinet.

When I attempt to turn the power on, the CRT turns on for about 1 second and then turns right off. Having a game connected to the jamma harness still functions when buttons are pressed and sound does come out of the speakers as well when I keep the cabinet’s power on.

I removed the CRT along with the chassis (discharged it very safely and with following plenty of safety precautions) from the cabinet to check if any connections were loose on the chassis but I couldn’t seem to find anything out of the ordinary or loose. The caps also seemed to look fine to me as well.

I’m not an expert with this stuff so please bear with me with this :(

The following links are pictures of the Astro City’s chassis and board that connects to the neck tube of the CRT and a video of the cab being powered on with the issue happening:

https://imgur.com/a/Vkzti4Y

https://imgur.com/a/nUxtDzz

When I purchased the cabinet it was in working condition and the screen powered on with zero issues but after it was transported, this is what happened and what’s been giving me a headache for the past week now.

Any help or input on this would be extremely appreciated as this is driving me absolutely mad!

Here’s a few more pictures of the back of the CRT and the control board:

https://imgur.com/a/GrBsjCr

https://imgur.com/a/YO0jxPt
 
that's gonna be tough for you to figure out. Typically it means it's shutting down because something is wrong, but diagnosing will require advanced skillset. If you don't see an obviously bad component (leaking capacitor, burned resistor etc) your best bet is to boxed that up really nice and ship it to PNL Video Vending In Covina, California. They have fixed many monitors for me where I couldn't figure out myself. They turn them around REALLY fast and normally charge $55 plus shipping if it's a pretty straightforward repair.

There is also Sharp Image in Las Vegas, however I've heard good things about them but never used them. I can speak from experience John at PNL is really nice, and really fast.

Some people complaint that PNL only fixes the bad component and won't do a full recap, which is true. For $55 he will find the issue, fix it and send it back. If you want a full recap rebuild that is obviously much more expensive. He does warranty his work and I've even had him honor that once. My two cents!
 
Check if your solder points around transistor Q532 are all burnt up. If it is, you may have had the same problem as me, which is fixable. The caps go bad, which mess up other parts on the chassis that need to be replaced.

I wrote about it here:

Astro City Restoration and Monitor fix

aKbI8r9m.jpg
 
Thanks for the suggestions guys.

From my own pair of eyes, it doesn’t look like any of the caps are leaking and the fuses don’t look blown. I’ll test out the fuses with a multimeter to check if they’re good or not.

I’ll also take a look underneath the chassis to see if any transistors are burnt up.

Luckily my roommate’s boyfriend knows someone in my area that operates an arcade and owns a few candy cabs that he’s restored and look absolutely gorgeous (one of them being a Capcom Impress cab ) and he offered to take a look and to help me as well. Crossing my fingers that everything goes well!

Also if anyone had any more suggestions please post!
 
Check easy stuff first. Sounds power related. Fuses, voltage regulator, hot, and then hope it's not your flyback.

Check for Cracked solder joints.
 
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