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Marshall JCM2000 Bias Mod Kit TSL Series made in UK with fast international shipping

5.00 out of 5 based on 4 customer ratings

Marshall JCM2000 amps when ageing tend to have the main printed circuit board start to become slightly conductive and bias to the EL34 output valves becomes unstable of goes very high and cannot be adjusted.

This  kit totally fixes this issue,

We now offer much faster international shipping options – just enter your country and post/zip code at checkout

$62.44

Product Description

Marshall JCM2000 amps when ageing tend to have the main printed circuit board start to become slightly conductive and bias to the EL34 output valves becomes unstable or goes very high and cannot be adjusted. This results in high valve anode current which cooks or wrecks the output valves.

We now offer much faster international shipping options – just enter your country and post/zip code at checkout

This kit totally fixes this issue without the need for replacing the whole main circuit board. If you know how to use a soldering iron and know how to work on a circuit board then this is an easy upgrade. Some expertise in soldering is needed to install this board. If you are not sure get an amp tech to fit the board

This Marshall JCM2000  kit consists of a little printed circuit board with full instructions and picture on how to fit the road and saves on replacing the whole main board.

This version is designed for the TSL series. There is a version for the Marshall JCM2000 DSL series too. The kits are assembled, stocked, and posted from the UK.

We have fitted  this kit in a Marshall amp ourselves and it completely solved the cooking output valves problem.

The product is supplied with the board, adhesive stand offs to mount the board, and full step by step picture and written instructions. This is not an official Marshall kit but was developed to solve a common issue with this amp series.

There is special drill bit needed to drill the printed circuit board and this is included with the kit.  Price includes post and is sent 1st class post in the UK. We ship this kit worldwide and you can select your shipping option at checkout

 

The manual was updated in July 2020.

 

Fitted Board in a DSL 50 Amp

Fitted Board Example

We can send you a link to the manual so you can review before deciding to purchase. Just email us and we cn send you a link to the document

You should consider replacing your EL34’s as they will likely be worn due to overheating. Check out our EL34 matched pairs and quads from JJ, EHX, Tung Sol

Customer Reviews


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"Great service.Stewart was a great help and very knowledgeable.Thank you" - C.C. bought Quad JJ EL34 II on 28th July 2020

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"Very helpful and spot on service Thanks Our 1950 Fender Super sounds awesome!" P.C. bought Sovtek 6SC7's on 24 July 2020

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