Category Archives: Guitar Amps

Fender Hot Rod Deluxe Guitar Amp Repair: New Filter Caps.

Here’s Fender Hot Rod Deluxe that came into our workshop in need of new filter caps. Whilst you would expect the filter caps in, say, a 40 year old Fender Twin Reverb to need changing, it’s surprising that the caps in a 10 year-old Hot Rod Deluxe should have expired; however from my own experiences, […]

Also posted in Amp repair, London | Leave a comment

“Shadow” the new Little Barrie album is now out.

Check out the new Little Barrie album “Shadow”. Barrie used a JPF Regent combo and a Fender Blonde Tolex Bassman for all the guitars on the album. You can see (and hear!!) Barrie demoing the combo on our Youtube channel.      

Also posted in Amp building, JPF Amps, Live Music | Leave a comment

Fender AB763-style Valve Guitar Pre-amp Custom Build

We were asked to make a valve pre-amp for a customer who wanted a simple clean Fender-style pre-amp, mainly for playing jazz. Here are some of the parts before the build.     The PCB is a charge pump circuit from Tube Town that boosts the incoming voltage (12VDC in this case) to a user-adjustable […]

Also posted in Amp building, Effects pedal, JPF Amps, Pedal building | Leave a comment

New JPF Sound Sample and “Rockumentary”

We now have a “rockumentary” on Youtube where I go into some detail about the design and construction of JPF amps, and there is also some footage of David PAge demonstrating the a SC15 combination. These can be accessed via our media page.

Also posted in Amp building, JPF Amps, Sir Charles | Leave a comment

Fender Blues Junior Guitar Amp Repair

I see quite a few Fender Blues Juniors in the workshop for repair; not that they are unusually unreliable, it’s just there are a lot of them out there! However you do see many of the same faults occurring, so here’s some photos highlighting these from a recent repair. Firstly, like many amps that use […]

Also posted in Amp repair | 3 Responses

Aguilar AG500 Bass Amp Repair: Man vs SMD Round 1

Here’s a repair I conducted on a more modern amp, a Aguilar AG500 bass guitar amplifier, where we were dealing with the dreaded SMDs. This amp is quite an interesting design as it has a class D output stage, however unlike most class D amps it’s not ultra light. It employs a linear power supply […]

Also posted in Amp repair, Bass Amps | 1 Response

VOX Night Train Guitar Amplifier Repair

Here’s some photo’s from a recent repair of a VOX Night Train amplifier. The amplifier was producing no sound. Curiously the HT voltage on the first pre-amp valve was only 95 VDC, way below spec. I removed the valves and the HT on the first valve stage was still only 95 VDC. On further investigation […]

Also posted in Amp repair | 7 Responses

Peavey Classic 30 Guitar Amplifier Repair

Here are some photos from the inside of a Peavey Classic 30 that I recently repaired. The amp was brought in making a ton of crackling noises and was cutting out intermittently. It had been looked at previously by someone who had concluded that the PCB had absorbed moisture (not possible), and had tried to […]

Also posted in Amp repair | Leave a comment

More safety earthing issues. VOX AC30 and Yamaha PA

A couple of safety earthing issues I’ve seen over the last few weeks. Here’s the safety earth from a recent repair on a JMI era VOX AC30. Suffice to say, if you were going to solder the safety earth to something, then the chassis might have been a better bet…… OK, that was a vintage […]

Also posted in Amp repair, JPF Amps, Vintage amps | Leave a comment

Brighton Guitar Workshop website now active

I’ve posted previously that a friend of mine, Nathan, is building and repairing guitars in Brighton. Nathan’s now got his web-site, Brighton Guitar Workshop,  up and running so you can check out his work.    

Also posted in Amp repair, Bass Amps, Effects pedal, Effects repair, Guitar repair, JPF Amps, Vintage guitars | Leave a comment
%d bloggers like this: