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Suzuki_Bison

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So the monitor inside my astro is omitting a high-frequency tone. I was working with an arcade-tech friend of mine who thinks it could need a re-cap, or possibly could be a voltage issue, but we're not 100% sure. The ringing seems to change pitch when the flyback is touched or nudged (we were sure to test this safely).
Anyone else ever experienced this before?


 

rewrite

Multi Boyz Litigator
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If it has screws that mount the flyback to the chassis, try tightening them down a bit. The flyback vibrating can make a god-awful whining sound.
 

Suzuki_Bison

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Ill definitely look into this!! Also, I have to correct myself that the monitor actually is an MS8-29, not the MS9.
 

Suzuki_Bison

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normally a noisy coil down the side of the flyback
i heard this can be the issue as well, would a cap-kit solve this (planning on recap anyway) or is the coil something totally separate I need to purchase?
 

gunblade

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i desolder the coil and check if its fully intact then resolder and use a hot glue gun to hold in place using the heatshield as the glue anchor point to the coil- it helps prevent vibration and should quieten the coil down significantly
 

stj

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check all large parts or parts bolted to anything for cracked solder joints.
 
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