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Station X · 19th Mar 2018, 4:30 pm

Disconnect the cap from the control only and check whether the grid voltage drops to zero.

Measure the voltage w.r.t chassis on the disconnected lead. It should be zero, but if the cap is leaky you may see a voltage there.

19th Mar 2018, 4:30 pm	#103
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Bush VHF 81 Restoration Disconnect the cap from the control only and check whether the grid voltage drops to zero. Measure the voltage w.r.t chassis on the disconnected lead. It should be zero, but if the cap is leaky you may see a voltage there. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.