Tube Amplifier Repair

Tube Amplifier Repair

Comments

I have a problem with reverb on my Marshall JTM30 . When I turn on the amp sometimes reverb is not working. After a few times pressing on-off standby switch reverb start working normaly. Any idea? Tnx
I built a Princeton 5F2 clone. Simple circuit, having built several amps of complexity. No shorts (shown by my current limiter bulb), but on power up, the amp squeals, like an oscillation. I remove the preamp tube (only one) and apply power, no squeal, and the filters charge. Looks normal. have swapped out all three tubes and several capacitors. Bad filter?
Hi, I have a red k**b Fender Super 60 head from the 90's and a tremendous amount of hum is introduced as I increase the 'Reverb' control... anybody else have this issue?
Need help troubleshooting/repair 1966 Fender Dual Showman amp
Looking for a Schematic for Rickenbacker M-88, any help appreciated! Thank you!
Does anyone know where i can get the wiring schematic for a Route 101 tube 60 guitar amp? or I just really need the value of resistor # R39 thanks

Jay Forbes has been repairing tube amplifiers for over 40 years. This page documents repairs made. To inquire about getting your amplifier repaired, please send an email to:

[email protected]

or visit www.jfradiorepair.com

Include make, model and condition (e.g.

tubes missing, rust), I will respond with a rough estimate to repair. I look forward in discussing your repair issues and/or bringing your amplifier back to factory operating condition.

Operating as usual

Photos from Tube Amplifier Repair's post 04/25/2021

Photos from Tube Amplifier Repair's post

Tube Amplifier Repair updated their address. 04/25/2021

Tube Amplifier Repair updated their address.

Tube Amplifier Repair updated their address.

Photos from Tube Amplifier Repair's post 03/13/2021

Photos from Tube Amplifier Repair's post

Photos from Tube Amplifier Repair's post 03/13/2021

Photos from Tube Amplifier Repair's post

Fisher 400c - New on/off installed 12/17/2020

Fisher 400c - New on/off installed

Heathkit W-5M  #2 Repair 10/02/2020

Heathkit W-5M #2 Repair

Heathkit W-5M  #1 Repair 10/01/2020

Heathkit W-5M #1 Repair

09/08/2020

Photos from Tube Amplifier Repair's post

09/07/2020

Photos from Tube Amplifier Repair's post

Marshall 4140 Repair 01/16/2020

Marshall 4140 Repair

Marshall 4140 Repair

French Tube Amp Repair 12/14/2019

French Tube Amp Repair

French Tube Amp Repair

Fisher X-100a Repair 04/18/2019

Fisher X-100a Repair

Fisher X-100a Repair

Fisher X-100 Repair 12/08/2018

Fisher X-100 Repair

Fisher X-100 Repair

Fisher X202-b Repair 11/12/2018

Fisher X202-b Repair

Fisher X202-b Repair

Shengle Tube Amp Repair 10/31/2018

Shengle Tube Amp Repair

Shengle Tube Amp Repair

Bogen DB-10 Repair 10/04/2018

Bogen DB-10 Repair

Bogen DB-10 Repair

Zenith Phono Repair 10/04/2018

Zenith Phono Repair

Zenith Phono Repair

McIntosh MC225 Repair 10/02/2018

McIntosh MC225 Repair

McIntosh MC225 Repair

McIntosh MC225 Repair 09/24/2018

McIntosh MC225 Repair

McIntosh MC225 Repair

Telefunken Amp Repair 07/25/2018

Telefunken Amp Repair

Telefunken Amp Repair

Fender 5E3 Repair 07/25/2018

Fender 5E3 Repair

Fender 5E3 Repair

Fender 5E3 Repair 07/10/2018

Fender 5E3 Repair

Fender 5E3 Repair

Fisher X-100B Repair 06/29/2018

Fisher X-100B Repair

Fisher X-100B Repair

Fisher 500c - LED Light Install 03/29/2018

Fisher 500c - LED Light Install

Fisher 500c - LED Light Install

Fisher 500c Repair 03/29/2018

Fisher 500c Repair

Fisher 500c Repair

01/26/2018

Tube Amplifier Repair Service and Forum's cover photo

01/26/2018

EICO 2080 Amp - Operating thru iPod

EICO 2080 Amp - Operating thru iPod

EICO 2080 Amp - Operating thru iPod

EICO 2080 Amp Repair 01/23/2018

EICO 2080 Amp Repair

EICO 2080 Amp Repair

Fisher CA-880 -- Servicing 01/05/2018

Fisher CA-880 -- Servicing

Fisher CA-880 -- Servicing

01/05/2018

Fisher Amp - Noise Spike at Power Up

Why is meter Spiking at Power Up?
Is this Normal for a SS Amp?
If Normal, what circuit has failed to prevent this spike?
I'll post answer below after a few have responded.

Westinghouse Stereo Console 12/09/2017

Westinghouse Stereo Console

Realistic SAF-40D Repair 12/09/2017

Realistic SAF-40D Repair

Realistic SAF-40D Repair

Fisher X202b Repair 11/13/2017

Fisher X202b Repair

Fisher X202b Repair

Heathkit W4AM Repair 07/01/2017

Heathkit W4AM Repair

Heathkit W4AM Repair

Scott 299c Repair 04/05/2017

Scott 299c Repair

Scott 299c Repair

Videos (show all)

Fisher Amp - Noise Spike at Power Up
Grundig SO-112-PX -- Operating from Radio and New Phono.

Category

Address


20365 Belmont Park Terrace, Unit 114
Ashburn, VA
20147

Opening Hours

Monday 10:00 - 18:00
Sunday 10:00 - 18:00
Other Antique Stores in Ashburn (show all)
Hoydilla's Antiques Hoydilla's Antiques
Ashburn, 20147

We are a locally owned and operated antique and vintage shop.