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Main => Monitor/Video Forum => Topic started by: dabone on March 28, 2004, 12:43:40 pm

Title: Troubleshooting a tm-202g
Post by: dabone on March 28, 2004, 12:43:40 pm

Just got a tm-202g monitor (thanks gamedork) and I'm trying to troubleshoot it. It has no highvolatage and the crt heater is not active.
I've got 138 volts dc out of the powersupply section.
The monitor calls for 123.
So according to the trouble shooting chart at

http://slot-tech-ftp.serveftp.com:8080/monitors/flowcharts/generic%20flowchart.jpg

I need to check to measure the voltage at the collector of the hot.
I need to know what the hot is...
Horizontal Output transistor??
Is this the flyback?

Manual is available at

http://www.mikesarcade.com/arcade/manuals/monitor/TM202G.pdf

Btw I've reflowed the solder on the entire hv section.


This monitor looks really good conditon, it would be a shame not to fix it.
(Besides I need the practice, I've been away from the hobby for 7 years.)

Thanks
Later,
dabone

Title: Re:Troubleshooting a tm-202g
Post by: Ken Layton on March 28, 2004, 10:50:55 pm

Yes, in today's lingo HOT means Horizontal Output Transistor. You should install a capkit in this monitor before you do anything else.