CW Guitar Audio

CW Guitar Audio Professional repair/mod service of guitar amplifiers and all guitar electronics in central Ohio

Another DSL40 in for low volume and crackling. This one needed the switching circuit repaired and a new pair of power t...
06/18/2026

Another DSL40 in for low volume and crackling. This one needed the switching circuit repaired and a new pair of power tubes. The amp was previously modded to remove the bright cap from the ultra channel but the cap was reinstalled poorly resulting in solder pads missing. So that was removed and a new cap bridged around the board damage.

Marshall DSL40 with the typical problem of power loss and noise issues. This one was again caused by conductive adhesiv...
06/16/2026

Marshall DSL40 with the typical problem of power loss and noise issues. This one was again caused by conductive adhesive in the power supply. Some bad solder was tended to and a random noise issue was corrected with a new pair of power tubes.

Roccaforte Custom 100 head came in with excessive hum. Found multiple bad filter caps so the amp received all new filte...
06/16/2026

Roccaforte Custom 100 head came in with excessive hum. Found multiple bad filter caps so the amp received all new filter caps and bias caps.

Thomas Organ Crybaby Wah had no output. Both the input and output jacks were loose causing a lack of ground connection ...
06/16/2026

Thomas Organ Crybaby Wah had no output. Both the input and output jacks were loose causing a lack of ground connection as well as dirty/fatigued tip contacts. Replaced them with new Switchcraft jacks. Then found the pot to be dirty which wouldn’t clean up as normal. Replaced the pot and all is well again.

A pair of Fender Stage 112 combos came in with one having no output and the other randomly fluctuating volume. Both rec...
06/12/2026

A pair of Fender Stage 112 combos came in with one having no output and the other randomly fluctuating volume. Both received a cleaning of all contacts and connections.

2009 Mesa 5:25 Express had extremely low output after the customer did a tube swap to solve a microphonic preamp tube pr...
06/10/2026

2009 Mesa 5:25 Express had extremely low output after the customer did a tube swap to solve a microphonic preamp tube problem. I double checked all the tubes, traced through the circuit, and found a defective transistor in the switching circuit causing no output. Some bad solder was also taken care of and noisy controls cleaned.

2010 Diezel VH4 retube/service. First time in 3.5 years I got a little time to work on my own gear. This one just got ...
05/13/2026

2010 Diezel VH4 retube/service. First time in 3.5 years I got a little time to work on my own gear. This one just got a quad of JJ KT77 tubes, bias, and a dusting off. Experimented over a few years with different power tubes in it and settled back on the 77’s after trying everything else. If you focus in on the preamp you’ll see that every VH4 except for a few are built on a board that doesn’t accommodate all the components as if each is a prototype although they are all the same unmodified amp. Just an idiosyncrasy as all other models are built on a fully designed PCB.

Vox AC15C1 came in with no output. Found 1 power tube to be intermittently shorting from vibration so a new matched pai...
05/11/2026

Vox AC15C1 came in with no output. Found 1 power tube to be intermittently shorting from vibration so a new matched pair of EL84’s was installed. Still no output so further digging found that one IC chip in the reverb/buffer circuit was shorted as well. While in it, the screen resistors were upgraded in both value and wattage to make the power tubes last longer, keep the resistors from becoming damaged from a power tube short, and suspended from the board to keep the board from being damaged in the event of a failure while also dissipating heat properly.

Mesa Mark V had broken power tube bases stuck in the sockets from being installed incorrectly and a non-functioning rev...
05/10/2026

Mesa Mark V had broken power tube bases stuck in the sockets from being installed incorrectly and a non-functioning reverb. Got the tube base pieces removed, new tubes installed, checked everything over, and found the reverb fault. The reverb failure was caused by a transistor in the switching/muting circuit. With some skill, was able to replace it through a preamp tube socket opening rather than removing the whole board and front panel controls which could lead to another hour of labor.

PRS S2 Standard 22 in for a pickup swap and mod. Installed customer supplied Seymour Duncan JB/Jazz set. By customer r...
05/08/2026

PRS S2 Standard 22 in for a pickup swap and mod. Installed customer supplied Seymour Duncan JB/Jazz set. By customer request, I then installed a push/pull CTS volume pot with a switchable stock treble bleed(180pF) and pull option(Kinman treble bleed) for further retention of highs as the volume control is rolled down.

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1042 Solomon Square
Delaware, OH
43015

Telephone

+17408191458

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