Go7 discharge/fuse question

Mikey Jones

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I have been learning about monitors and read a post about a G07 with a blown fuse needing to be shorted/discharged at the fuse... is this the only monitor that this is a concern on also how would you safetly accomplish this? I don't have one to work on but was just curious.
 
It's the only one I've dealt with that has this problem. Normally I take an old screwdriver and attach a jumper wire to it. I attach the jumper wire to ground (the frame if the chassis is still attached) on the power connector side of the fuse, then touch my screwdriver to the other side. Be ready for a big BANG! Even knowing it's coming will make you jump. It's a lot bigger than when you discharge a tube. Sometimes it takes a chunk out of the screwdriver, which is why I use an old one.

If I'm doing a chassis that has already been removed (make sure you don't touch the bottom until you've checked it), then sometimes I use an old pair of insulated pliers. I spread the jaws (while holding the insulated handle) and touch the jaws to both leads of the filter cap leads on the bottom. Usually get a big BANG there too.

If you're especially paranoid, wear gloves...
 
I've never tried it but would like to. I hear you could use a car back up light to discharge it. It'll light the bulb and go dim when it's discharged. I guess you would get a loose socket and put the leads on + and -. I'd probably get some alligator clips with boots over them to do it.

I wouldn't try it with just this information I'd wait till somebody can fill you in on all the details to safely do it. Cap might hold to big of a charge. I'm really not sure I haven't put it all together yet.

I did what modessitt did but I haven't come into contact with a charge yet. I've only worked on two Go7 boards.
 
Yeah, the lightbulb method is the safest way. the bulb will light then go dim as the charge bleeds off. You can pick up a bulb/socket setup at a hardware store, hook up wires to the terminals, put insulated alligator clips on he ends, and then connect them to each side of the fuse....
 
I've never tried it but would like to. I hear you could use a car back up light to discharge it. It'll light the bulb and go dim when it's discharged. I guess you would get a loose socket and put the leads on + and -. I'd probably get some alligator clips with boots over them to do it.


As Mod mentioned, a light works very good......but don't use a car light. Car lights are 12 volt bulbs. You need a light rated at 120 volts (or greater). Just last night, I showed a guy how to do this. I use my work light. The G0-7 I did last night.....I took a voltage reading at the cap before hooking the light to it......170 volts.

Edward
 
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