WIP Archives - Page 9 of 13

November 26, 2019November 26, 2019

Morley Bad Horsie VAI-1 repair

Got this one in for repair

Led would not lit at and it did not pass any sound. Opened it up and took some voltage readings. It did not get any coltage due to a bad battery clip.

After replacing the battery clip it powered up but the led L1 would not lit. Turns out the led was damaged. Had it replaced and adjusted so the circuit would go into bypass mode when the foot is of.

I like the way that the bypass circuitry is built. Never seen a led/ldr combo used with a hex inverter to control the switching fets, works fine on a wah pedal.

Also fixed some new screws for the bottom lid, the old ones where missing.

/Krister

November 25, 2019November 25, 2019

Tendering a Boss CE-2

Boss CE-2 reapair and PSA mod — Boss CE-2

A great chorus pedal the Boss CE-2. Got this one recapped, rebiased and modified from ACA to PSA specs.

/Krister

November 20, 2019July 17, 2020

SubZero TUBE-H5 repair

Got this one in for repair, would not make a sound.

Sometimes it’s an easy fix, when opening the back I found the 12AX7 preamptube at the bottom of the chassie. Just put it back in place and it was ready o rock.

I opened it up and took a look at the circuit. Besides from the single 12AX7 preamptube and the EL84 power tube there’s two JRC4558 opamps on the circuit board, so what we got is a hybrid of solid state and tubes.