Stupid Question - powering monitor without yoke

snapJaw

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Powering monitor without yoke

Just wondering if powering up a monitor without the yoke wires attached will damage the chassis.

The monitor in question is a KTM-F Kortek/Sharp Image 33'.

I got a game in that was 'working', with board issues. I powered it up to see what was going on, and nothing. I looked at the monitor and noticed the yoke was not connected to the chassis. I hooked it up, and still nothing.

I checked the power supply, and everything seems to be fine. I noticed a resistor by the flyback that looks like it fried/blew open. The solder on the underside is completely gone from one of the leads.

Haven't tried replacing it as of yet, since the cage is a pain in the ass to remove, and I don't feel like doing it tonight. I just wanted to see if having it powered up without the yoke could have caused this, and do you think anything else might have blown out with it?

Thanks.
 
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Some older monitors (like the G07) will power up the HV without a load (yoke attached), but most monitors (including yours, I believe) will not power up the HV (flyback) without the yoke connected.

I test quite a few chassis of all types without the yoke attached while working on them on the bench. It makes things easier to get to for readings, and if you knwo what you're doing, you can make many different diagnoses without needing the HV up.

I doubt not having the yoke caused your problem, but it does sound as if your chassis has a problem...
 
Not having yoke connected will generally not kill a chassis, but it'll act dead until you hook up the yoke. However, having the yoke connected wrong CAN kill a chassis. Also, not having the anode cap seated correctly also can kill a chassis, and rather violently too, may I add.
 
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