VGA to Monitor Chassis Problem!!!

[yfglee]

Hi,

I have got the PC VGA output connected to my 21" Mon Chassis, but when I power up the Mon Chassis/or connect the VGA cable to RGBHV input of the Chassis, the home's current breaker cut down the power.

Then I had made no change anyway but only I connected to another 25" Mon chassis, this time getting no problem, a good game picture came out and no power cut down.

I think the problem may be occured from the  "Grounding" between the Chassis and the PC. Have anyone had met this problem and solved it? pls help !

thanks you very much.

[MonitorGuru]

You 21" monitor chassis requires an isolation transformer.

You're lucky the ONLY thing you're blowing is a circuit breaker, and not exploding the monitor chassis, your video card OR your entire computer system (or yourself).

Search this forum for Isolation Transformer.  It is a necessary piece of equipment for all but a handful of arcade chassis. (Assume it needs one unless you are explicitly told by a sticker that you do not need one, and then use one anyway).

[yfglee]

thank you for your reply, , I still have the following problems:

What is the purpose of the isolation transformer? Currently, I use 220V-to-110V Playstation transformer for connecting to 21" mon chassis.

why the current breakers cut the main power.?

For reference: I also had got a Arcade Game Board which is directly inserting to the 21" Mon Chassis, but work and no power break.
:

You 21" monitor chassis requires an isolation transformer.

You're lucky the ONLY thing you're blowing is a circuit breaker, and not exploding the monitor chassis, your video card OR your entire computer system (or yourself).

Search this forum for Isolation Transformer.  It is a necessary piece of equipment for all but a handful of arcade chassis. (Assume it needs one unless you are explicitly told by a sticker that you do not need one, and then use one anyway).