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Electronics => Repair => Topic started by: Ookpik on March 18, 2019, 12:20:22 am

Title: Need Help With Korean A-One AM-0629 Chassis
Post by: Ookpik on March 18, 2019, 12:20:22 am

I am fixing this chassis for a friend and am having trouble. I have deduced that the problem is most likely the voltage regulator however I have no idea which part or parts comprise the voltage regulator.

The chassis is the type that was used as a replacement chassis for 1980’s video arcade games. Unfortunately, no documentation seems to exist for this chassis. The closest schematic I have located can be found Here (https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxtdHBhY2lmaWNvfGd4OjViMDVkZTBiMTk5YmE1Y2I&fbclid=IwAR2yTcYpTh0L6JNIaT7_iS1oP9DGfS7HHHHUVO9QoI0Z8641DQk7Sq2rmVQ).

A larger image of the chassis can be found Here (http://www.tranquilitybasearcade.com/chas.jpeg).

(https://klovimg.com/images/2019/03/17/chas1.jpg)

Any help would be greatly appreciated!  :)

Title: Re: Need Help With Korean A-One AM-0629 Chassis
Post by: Ookpik on March 22, 2019, 06:29:46 pm

I did a cap kit on the chassis. No change.   :(

If anyone else has any suggestions they would be greatly appreciated!  :)

Title: Re: Need Help With Korean A-One AM-0629 Chassis
Post by: coromonadalix on March 22, 2019, 08:43:12 pm

hum  check  on the aluminum plate,  i think the Q05  is a regulator or the flyback driver,  do i see some U02 near the plate ???

your closest schematics is for speakers   not for an monitor