Simplistic MosFET HV Shunt Regs

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What about modding to use the Jung bias multiplier?

C1 cap could be 1uF & R5 & R6 1Meg
 

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I need some help,
accidentally shorted outputs to ground.
Power supply before the regulator works but the led on the regulator not working and no output power.
I was taking voltage readings on the pre amp and my meter prob slipped shorting to ground terminal.
Any body know where I should start on what component or components I may have killed.
 

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diyAudio Chief Moderator
Joined 2002
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Hi, sorry for bad luck. Anyway, in post #1 there's a link to a troubleshooting example/dialog few posts long. Read that to find clues. In short you first make sure there's still a working CCS section then you check the voltage making section semiconductors. Vbe, Vgs, are health indicators.
 
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Thanks Salas,
At least I got to enjoy the pre amp for a few hours the night before.
Sounded great.
I had to do a last voltage check and thats, that.
I'll try to follow the test procedures and with any luck get it back to the way it was before,
Grealy appreciate your help.
 
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