GALLIEN KRUEGER 400RB SCHEMATIC PDF

GALLIEN KRUEGER 400RB SCHEMATIC PDF

Variac on zero, power switch off- connect power cord. 2). Connect either output to load box (load A). 3). Resistance loads open (switch in. Gallien Krueger rb Schematic Diagram. Uploaded by esquisof. Gallien Krueger rb Schematic Diagram. Copyright: © All Rights Reserved. Download as. Hello, Service Manual of the Gallien Krueger rb this is a amp for bass, there are layout, pcs, schematics for preamp and poweramp.

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PNP will tend to be 0. GK rb fan issue? Different transistors have different areas and doping so the exact voltage needed will vary. If you don’t use a footswitch to boost, than this is not only acceptable, but no different than having the I.

Can someone check me? Also, will add more if I find the other ones too.

Fixed that up, things are pretty good now, but it still won’t bias right. I’ll probably just remove the chip and jump the pins. The resistor-string is now Gallien-Krueger RB, got schemo, need help fixing.

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Maybe one of these hypex class D modules. What can I use?? Hey everyone, my apologies for having been absent from this particular thread for so long. It’s a little hard to identify which resistor it is since at this point that area of the pcb is fairly blackened. Let me know what else I can do to help you guys help me.

Peavey used a ton of the TL gallken in the s. I’ll keep replacing resistors but if anyone could help me figure out a way to keep it powered on long enough to measure some voltages that’d be a big help. Q9 is a small Darlington with gain over 2, If I can’t fix it, I can fix it so nobody else can!

I’m turning some of them schhematic on. I think the divider values are about 50 times too small.

GALLIEN-KRUEGER RB SERVICE MANUAL Pdf Download.

Here’s what I’ve done so far For example, I’d rather have reverb always on that be stuck in one channel. You are unable to reach 0. More will cook, today or next summer.

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In the old days I had and 10 ohm resistors at 10 or 20 Watts. If this does not happen, the amp gets hot, idles at higher temp, gets hotter yet, and goes into “run-away”. Please try to post it here, for future reference for others. For a fairly constant idle current in Q13 Q14, we need a bias that DEcreases when the amp gets hot.

Gallien-Krueger 400RB Service Manual

If your wondering about the NTE parts galljen their online cross reference http: It sure looks like you should have plenty. I would like a pdf copy of the schematic if possible. If it actually takes most of 4mA, the base current is less than 2uA. Votes for the wrong politicians? I can email you a copy of the service manual. Also, it’s generally not as loud as it should be.