#1
I'm rebiasing my JMP 2203 and when i measure the cathode current the first two output tubes give me 0.7ma to 1.7ma and the other two give me 0A. whats the matter? :S
Fender Strat 60th Anniv HotRoded
others

Marshall 1980 JMP 2203
Marshall JCM900 1960A Cab
Valve Jr.

VOX v847a Modded
EHX Small Clone Modded
Maxon OD-820
MXR 1978 Flanger
Digitech Whammy
TC Polytune
Custom LPB-1 Boost
#4
what am i doing wrong? im using a bias meter i bought of ebay. i switched off the amp, let it cool down, remove the power tubes, insert the probe in the socket and put back the tubes in the probe socket, turn on the amp and after 5 minutes i turn on the standby switch, tubes get red so i know they're good, power the meter and nothing,, just those values. my meter should only reads the cathode current.
Fender Strat 60th Anniv HotRoded
others

Marshall 1980 JMP 2203
Marshall JCM900 1960A Cab
Valve Jr.

VOX v847a Modded
EHX Small Clone Modded
Maxon OD-820
MXR 1978 Flanger
Digitech Whammy
TC Polytune
Custom LPB-1 Boost