Kustom K250-2

[gbono]

Low output level and I really need schematics for the PA driver board 009-5056-00 and preamp PC5067 - though I would also take the schemo for the reverb board as well. Also would like to see if anyone has a source for the light bulbs in the power and polarity switches (this switches look hard to source as well).

I cannot download pdfs off this site - I've tried several machines with different OS and browsers so I'm not sure what I'm doing wrong?

Please send schematics to gbonosurf@yahoo.com

THX

[52 Bill]

All of the old links to schematics were lost a few months ago, so it's not your system.

Here are the entire set of schematics for your amp.

The bulbs are GE335 lamps. I used to get them at Mouser. The Blue activator cap will pop off of the switch and the bulb is inside the post. Use a piece of rubber tubing or heat shrink to unscrew the bulb. Be extremely careful as the plastic threaded mounting section of the switch will break off if handled roughly.

[gbono]

Thanks for posting the schematics - I found a list of substitute transistors that I found on the Kustom forum (not a big fan of NTE though)

KEI Part No. / Marking / Std. No. / Description
007-0000-00 / 36892 / 2N3055 / nte130 / NPN Output Trans
007-0002-00 / 36735 / 40408 / nte190 / NPN Transistor
007-0005-00 / 2N3567 / nte123 / NPN Transistor
007-0006-00 / 2N3638 / nte129 / PNP Transistor
007-0007-00 / 2N3565 / nte123A / NPN Transistor
007-0008-00 / SE4002/PET8002/2N5088 or 2N5089 / NPN trans
007-0009-00 / 2N4249 / nte159 / PNP Transistor
007-0011-00 / 38736 / 40409 / nte128 / NPN Driver Trans
007-0012-00 / 38737 / 40410 / nte129 / PNP Driver Trans
007-0014-00 / 2N5033 / P-Chan JFET
007-0024-00 / 40841 / nte221 / N-Chan MOSFET

007-6004-00 / FD111 / nte177 / Silicon Diode
007-6005-00 / 1N3193 / nte116 / Silicon Diode
007-6006-00 / 1N3754 / nte5801 / Silicon Diode
007-6016-00 / Silicon Diode
007-6020-00 / 1N270 / nte109 / Germanium Diode
007-5349-00 / 1N5349 /nte5127A / 12v 5w Zener Diode

007-7015-00 / uA739 / XR4739/nte725 / 14 pin DIP Dual Op-Amp
007-7023-00 / 5558 / RC4558/nte778A / 8 pin DIP Dual Op-Amp
007-7041-00 / 80848 / LM3080T / Transconductance Amp

CR3 007-6018-00/You need a part rated at minimum for 100 volts and 3 amps. I normally use a part rated for 400 volts and 25 amps as a replacement for these. The only problem with this replacement plan is that the push on connectors in the amp need to either be replaced with larger ones or removed and the wires soldered directly to the terminals on the new rectifier bridge.

DSI Pilot Lamp 1829/Ge335

[52 Bill]

DSI Pilot Lamp 1829/Ge335

The 1829 lamp is a bayonet bulb used in the earlier amps that have a jeweled pilot holder.

The 335 lamps are for use in the square blue push button switch amps.