Trace Elliot 1215 Bass Combo: Oh Dear, Wonky Knobs

Trace Elliot manufacturing, what were you thinking?! Expensive looking collet knobs on splined potentiometer shafts. They didn’t even put little shims in the slots as I have seen some manufacturers do so the slot closes up. The knobs just go on wonky and come loose so you would be paying for this lazy solution when the warranty claims start rolling in.

By the way folks. Don’t ever try to prise the slot apart, the metal breaks so easily and you end up paying for a new potentiometer. The only technique I found to get them to stay on was to give them a really good tighten with a good driver and hope for the best.

FOR SALE: Kustom Quad 65 DFX 65 Watt Guitar Combo Amplifier – £95

Model: Quad 65 DFX
Power output: 65 Watts RMS
Channels: Rhythm Neutral/Brilliant, Lead UK/USA
Effects: 8 x preset
Impedance: 8 Ω
Internal speaker: Celestion Seventy 80. 80 Watt RMS 8 Ω
Dimensions: 46 x 53 x 29.5 cm
XLR DI output
CD/AUX input summing stereo jack
FX Loop send/Return
Footswitch Jack (footswitch not included)

Amp is very tidy and has just been recovered with leather effect vinyl.

£95.00

 

Gibson Les Paul Deluxe 100 Boost Circuit Schematic

I had to repair a Gibson Les Paul boost circuit and drew out the diagram which does not seem to be available on the net so I thought I’d share. The 47k trimmer sets the boost gain. The 4.7pF caps are an educated guess. I think they are just there to avoid RF interference. It was odd but the source terminal of the J202 FET was connected to the 22k load resistor R3. I guess they are interchangeable.

Gibson Les Paul Boost Circuit

Gibson Les Paul Boost Circuit

Latest Repairs: Fender Rhodes 54 Electric Piano

IMG_1882I had a Fender Rhodes 54 key electric piano in for repair last month. They use guitar type magnetic pickups wired together. If one pickup fails, every key goes silent. It is still easy to get spare parts for these so they can be brought back to top condition. The 73 or 88 key versions are more popular than this 1980 vintage 54 key instrument. I repaired or replaced 17 pickups on this one, re-adjusted the hammer action and individual note volume and re-tuned. IMG_1876 IMG_1875Call me if you have one needs some attention.

Fractal fern – totally irrelevant but lovely don’t you think?

I used to burn the midnight hours coding computer programs. This bracken fern style picture is generated by a fractal generator I wrote from scratch. I think the program got deleted (probably on a non-readable floppy disk somewhere!). The fractal was generated in monochrome at a very high resolution then each pixels intensity was set by the number of hits within its bounds. I then gave it a green tinge.

green_fern

Fuck all to do with amp repairs though!