BluesBoyBcn Posted September 14, 2017 Share Posted September 14, 2017 Recently I bought a second hand/used LINE 6 Spider Valve 112 After an approximate an hour of operation my amplifier starts to fail when you change channels, turning off the sound and channel light for 2 sec and continuously reset the channel. The whole metal chassis gets very hot, even the on / off and standby switches reach a very high temperature. I use a FBV express pedal , but the amp do the same malfunctition even without using it. Sometimes the stored banks channel information has been deleted, as if it had done a factory reset help ! Quote Link to comment Share on other sites More sharing options...
BillBee Posted September 14, 2017 Share Posted September 14, 2017 I am not a SV guru by any stretch but from what you describe it sounds like something, either a component or solder joint, is beginning to fail in the preamp section. They generate ALOT of heat and the MKIs suffered failures due this -> IMO btw. One user put a fan pointed at the chassis and the reboot loop stopped for awhile. Another tried an innovative heatsink mounting. But those are not cures just an indication that the failure was probably heat related. I would shoot an email to L6 and see what they say as its not a tube amp like Crate's old V line where remounting a 5w resistor took the heat out of the pcb. It does look like a Service job. Quote Link to comment Share on other sites More sharing options...
BluesBoyBcn Posted September 14, 2017 Author Share Posted September 14, 2017 Thx for the answer. I was diggin on google and I think is a "normal malfunction", do you think putting a 12v fan inside de chasis will solve the problem ?....or a heatsink ? I think i took the wrong decision buying it..... :( Quote Link to comment Share on other sites More sharing options...
psarkissian Posted September 14, 2017 Share Posted September 14, 2017 MkII or earlier? Quote Link to comment Share on other sites More sharing options...
BluesBoyBcn Posted September 22, 2017 Author Share Posted September 22, 2017 Spider Valve 112, not MKII.. Quote Link to comment Share on other sites More sharing options...
BillBee Posted September 22, 2017 Share Posted September 22, 2017 Yeah that's what I feared. The mainboard for the MKIIs are out there but the MKIs' are not. A heatsink or fan is not really a solution as the problem is already there and it would at best "maybe" postpone the inevitable trip to the service center. I never recommend poking around in an amp as you can get zapped really bad by the caps in there. Psarkissian is "the man" to talk too regarding a trip to the L6 Mothership for service. The poweramp section will still work and does make a great tube based poweramp for running a modeler into. Keep that in mind before setting it on fire. :) Quote Link to comment Share on other sites More sharing options...
psarkissian Posted September 22, 2017 Share Posted September 22, 2017 50/50 chance of repair. If there's a Line 6 authorized repair in your area, who can do board component level repair, then that might fix it. Quote Link to comment Share on other sites More sharing options...
BluesBoyBcn Posted September 27, 2017 Author Share Posted September 27, 2017 Thanks for the answers, I m in Barcelona(Spain), do you know any authorized service around here ? Wich kind of "repair" are we talking about...?...replace board integrated circuit..? ..or some other more..... "domestic repair" ? Thankyou guys for the answers, Quote Link to comment Share on other sites More sharing options...
BillBee Posted September 27, 2017 Share Posted September 27, 2017 MKIs will need to be serviced at the component level. I wish a warehouse would find a few crates of NOS boards. :) Quote Link to comment Share on other sites More sharing options...
psarkissian Posted September 27, 2017 Share Posted September 27, 2017 http://line6.com/find/service_center/ Quote Link to comment Share on other sites More sharing options...
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