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Re: [Amps] 811H pops fuses

To: qrv@kd4e.com, Amps <amps@contesting.com>
Subject: Re: [Amps] 811H pops fuses
From: peter chadwick <g8on@fsmail.net>
Reply-to: g8on@fsmail.net
Date: Sun, 19 Jan 2014 00:00:39 +0100
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Pull all the tubes and see what happens. Take due precautions to make sure the 
HV is discharged - I pull the power lead out of the wall, give the HV a minute 
or so to discharge, then put a resistor of 10 watts and between 1 and 5k 
between HV and ground  for a few seconds and then put a clip lead HV to ground. 
Pull tubes, remove clip lead, and power up.

Does it blow fuses then? 

If not, discharge HV as above, insert tubes one at a time, if it doesn't blow 
fuses, discharge HV as above and change tubes to find the one that caused it - 
discharging each time.....But probably best to change all the tubes.

73

Peter G3RZP

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