Options for continued use of Spidervalve 212

[sifusteve]

I managed to acquire a MK1 (I believe) Spidervalve 212 that I absolutely love.  However, it appears as though the DSP chip may be failing and from what I gather may be unfixable.  When it works, it sounds lovely.

 

From what I can tell, the power amp stage looks good.  I just replaced both preamp and power amp tubes with 12AX7 and a matched set of Sovtek 5881s.  Biasing on the power tubes is ~32mV, and the amp has never been turned on without a speaker load.

 

If the DSP board does fail, what options do you think I have?  I would love to continue to use the power amp section of this device, but I want to do it correctly.

[psarkissian]

If it's an oxidized intermittent solder point, a Line 6 authorized service center can deal with that and do an overall

check up. Tubes are still available, but other parts are not,... processor boards are all gone and no longer available.

 

https://l6c-acdn2.line6.net/data/6/0a06434d8ea4507efaf692112/application/pdf/Spider Valve MkII Pilot's Guide ( Rev F ).pdf?_ga=2.19226620.559611353.1693237757-1854743224.1659634079

 

Can bypass effects and use the power amp input.

 

MkII has MIDI In/Thru connectors, the MkI does not.

 

[sifusteve]

psarkissian,

 

Thank you for your reply and answers.  I have taken the processor board into my own work where I have SMT rework tools and a nice bench microscope.  After reflowing almost all of the solder joints, replacing some electrolytics, performing a thorough cleaning with rubbing alcohol, placing a heatsink with thermal tape on the DSP and Codec chip, the board and amplifier seem to be working.   I managed to play through it for about 1 hour without incident where before it would take only 10-15 minutes for the board to act up cease to work.

 

Thanks for the advice and direction.

 

 

 

[psarkissian]

Nice heat sinks.