MOD – 3 Chassis

At this stage, I had a hell of a job to undertake to try and preserve the chassis. As I took it apart I realised just what a bad state it was in. The side cheeks were badly corroded, the upholstered front was torn, there was rust everywhere and it looked in a very sorry […]

MOD III Cyborg Upgrades

Dreams The next few days were strange, as I debated which way to go with the project. The metering was inadequate. I could see that the mix buss I/O, the 8 Busses, had perfect monitoring and was switchable between monitoring outputs and returns for monitoring a tape machine. However, there was no PFL input metering […]

MOD III – Yes My Master

The master section was a bit of a headache to work on. From taking it apart to execution, it was just a ball ache to be quite honest with you. Two PCBs wired together, so these had to be undone before any real work could commence. In the schematic, it has connections labelled for Aux […]

MOD 3 Control

As I looked at the circuit board, it was a fairly simple setup. You could see the stages by each set of pots, and all the part values were printed on the board silk screen, although not the part numbers – R1, Q1 etc. The potentiometers looked badly corroded and were made by radiohm. I […]

MOD III Pandora’s Box

I lent the mixer against the wall to remove the bottom panel, and discovered all the screws on the front end were rusty. When I say rusty, I don’t mean a bit of corrosion, I mean completely ruined. The rear screws came off OK, it was the front end that was the problem. As it […]

MOD III Testing

Having sorted out the power supply, I then turned to the console itself. How well was it going to work, what will I find? These questions rebounded inside my head so I mustered the temerity to begin my arduous slog and begin fully testing every channel. The old instructions on the Allen & Heath website […]

MOD III Power sUPPLY

The plot thickened as I tested the power supply. I checked for voltage on the outputs and discovered it was putting out 27V instead of 24V. Not to worry I thought, lets see if it turns on. Connected it up and the relay inside clicked, no meter lights turned on though. The power light on […]

MOD 3 Mixer

Allen & Heath Model 3 (Mod III) – 1979 Vintage Mixing Console Restoration Finally, after all these years of waiting I got my hands on a 16 track studio mixer. I was looking at a Zed16 FX to replace my dilapidated Soundcraft Folio SX. However, this vintage mixing console caught my eye as one of […]

Vintage Tandberg 1010 Amplifier

Blast from the past Vintage early 70’s Tandberg amplifier with germanium output transistors I had this 1971 Tandberg amplifier in and it needed some serious TLC after years of neglect. Tandberg are a Norewgian brand who still made viusal equipment until recently, although they were bought out by cisco systems and the brand has been […]

Roland JP8000

This Roland JP8000 repair was to resolve an issue with a distorting output. After being in storage for a few months it transpired that there was an issue with the output stage upon testing it. The main output was much quieter than usual and there was a degree of nasty distortion, rendering it unusable. The […]