David Haddock Electronic Repairs Cairns. Audio/video Repair, Vintage Hifi, PA & Lighting Maintenance, DMX Fault Finding & Repair David Haddock Electronic Repairs Audio Video Equipment Repair, Video Equipment Repair, PA system Troubleshooting, DMX lighting Repair

Call 0418 714 619

Repair and instalation of commercial sound systems and audio/visual systems for churches, bars, restaurants and clubs, in Brisbane & Gold Coast. Musicical instrument, band gear & amp repairs, Marshall, Fender, Laney, Ampeg, and Matchless, Bad Cat, Mesa Boogie, VHT, Soldano. HDTV tuning for your new LCD or plasma TV throughout Brisbane, Logan, Gold Coast. Valve Replacement, tube, valve guitar amplifier repair, service, retube, bias, parts, tubes/valves, tube matching, Brisbane, Logan, Gold Coast DMX Lighting Repairs we Service Brisbane, Logan, Gold Coast Speaker Recones.  Brisbane, Logan, Gold Coast DIY Electronics Kit Completion, Tonepad, muzique, designboom, jlmaudio,

Valve tube amplifier repair

There's nothing like the sound of a old school valve amp
to make your guitar sing, however Tube amplifiers need
servicing on a regular basis to ensure that your valves
are correctly balanced and biased. 

David Haddock electronic repairs as in more than
35 years experience in working on the circuitry
including Fenders, Marshals, Ampeg, Bad Cat,
Blackstar, Bogner, Egnater, Hiwatt, Laney,
Mesa Boogie, Orange, Peavey, Randall, Soldano,
Vox, Vase & Goldentone.

Over the past thirty years, I have been doing
tube amplifier repair for of musicians and Hi Fi buffs


The procedure:-

1) Clean the amp chassis of accumulated dust, cobwebs, dead insects etc.
2) Clean all pots, switches, valve sockets, RCA terminals and speaker terminals
3) Check voltages on Power Supply
4) Connect speakers and slowly power up through the bulb variac.
5) Check voltages on valve pins
6) Balance and bias valves
7) Full 24 hour burn-in

David Haddock electronic repairs is a
valve/tube amplifier specialist and will
give your prized amp the special care
and attention it deserves.

Testing, re-bias and replacement of 12AX7, 12AX7B, EL34B, EL88, EL34, 12AX7, GZ34, 5AR4, 6V6GT, 6BM8, ECL82, 5U4 Valves/Tubes  for Marshall, Mesa Boogie, Fender, Ampeg, Orange, Laney, Egnater, Bogner, Bugera, Matchless, Engl, Blackstar, Vox,
Carvin, Dunlop, EVH, DV Mark, Paul Reed Smith, Music Man, Hughes & Kettner.

Vintage Amp Restoration

We love doing Vintage Amp Restoration, amps arrive with damaged and missing original parts and had been left for dead.

We often get repair and restoration request for vintage amps that could sound amazing and we love to see them back to their original condition.

Please contact us if you have a potential amp for restoration or repair.

Ph 0418 714 619

david (at) davidhaddockelectronicrepairs.com.au


44 Station Rd
Bethania QLD 4205

Mackie Mixer & Amp Repairs
Marshall Amp Repairs & Tubes
Yamaha Audio Repairs
Behringer Audio Repairs
Fender Amp Repairs & Re-Tube
JBL Recones & Speaker Repairs
Laney Guitar Amp Repairs
Peavey Audio Repairs
Blackstar Amp & Audio Repairs
Ampeg Amp Repairs
Roland Amp & Audio Repairs
David Haddock Electronic Repairs Cairns. Audio/video Repair, Vintage Hifi, PA & Lighting Maintenance, DMX Fault Finding & Repair