Will do... Thanks!

Update... The amps sounds great, except my presence control doesn't seem to do anything?

I have removed the redundant resistor and re-soldered the wire to pin 5, checked all fuses, it is biased properly...but now I get no sound out of the amp. All three channels are dead. The channel buttons all work. Rather, the lights are changing on the front panel... I can hear an occasional pop fro...

Understood. Thank you. I replaced the blown T500mA fuse today. Out of curiosity, I bell tested the contacts of the impedance selector switch. All 6 terminal legs (regardless of the switch setting) read continuity between the next... Is this normal? I've got the fuses in, checked in both high and low...

Thanks! I will wait for Antitoli. Question... Can a power tube test AOK on my Hickok 6000A, yet fail under actual use? I think the red-plating may have been the result of the power tube pin sockets being stretched open by the JJ 6L6GC tubes that were in it. Would explain a no continuity issue in reg...

The '87 Silver Jubilee 2550 is my all-time favorite of the entire SJ line. Its 25 watt mode is the bomb-diggity!

Thank you for the replies. Don't I need to put a new HT fuse in before testing? I have some on the way... They will be here in 2 days. Damn! I've been using these SED =C= 6L6 tubes for about 3 months in my other amp, with no issues at all. Are they now trashed from the red plating? I put them on my ...

I just got through cleaning off a ton of oxidation from the chassis surface (for max cooling), cleaned the tube sockets w/Deoxit, and then tightened the contacts in the power tube sockets. I ran through some tests, which all checked-out... No red plating, so I think that PIN 5 may have not been maki...

Thank you! I have the chassis out now. There is a resistor soldered to PIN 5 (green wire) on one of the power tube sockets... Is this normal? It's on the socket closest to the transformers. I was running it last night, and began to get very noisy. I looked in the back of the amp, and noticed that th...

This is my first post ever, so I would first like to say hello to everyone here. Hello! I have a Marshall 6100LM here. Channel 1 sounds great, but channel 2 may have some issues. I will list them… 1. JTM45 mode seems very low in volume. 2. Plexi mode seems low in volume. 3. JCM900 mode comes on like...