It's 290 ohm and the following are the voltage levels. pin1 0.2v pin2 12v pin5 237v pin6 246v
Probably I should check the R's around the meter as the pin6 voltage seems a bit high. Any other suggestion? Thanks Kihwal K9SUL On Apr 14, 2011, at 2:29 PM, Garey Barrell <k4...@mindspring.com> wrote: > Kihwal - > > Check Pin 2 of V17 for resistance to ground (270 Ohms) and voltage ~7.5 VDC. > > 73, Garey - K4OAH > Glen Allen, VA > > Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line > and TR-4/C Service Supplement CDs > <www.k4oah.com> > > > Kihwal Lee wrote: >> My TR-4C's s-meter points to S-9 under no signal condition. Adjusting the >> sensitivity and the zero pot won't correct it. I also noticed its reduced >> sensitivity compared to other Drakes that I have. The s-meter moves as >> expected >> when RF gain is lowered. Checked/replaced all tubes. I also checked the RF >> gain >> pot and it's fine. Resistances and voltages on the V13 12AX7 pins seem >> okay. I >> would appreciate any suggestions. >> >> Kihwal, K9SUL >> >> >> _______________________________________________ >> Drakelist mailing list >> Drakelist@zerobeat.net >> http://mailman.zerobeat.net/mailman/listinfo/drakelist >> >> > > _______________________________________________ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
