Question about Line 6 Spider Iii 15 Modeling Guitar Amplifier 15 Watt

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No sound, no lights except lcd screen and only shows black boxes

Its not the internal fuse or plug fuse, their both ok. Just got no lights and only solid black boxes in the LCD display.

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  • 73 Answers

Sounds like something shorted. you probably have a shorted relay and maybe more. depends on when the protection circuit kicked in during the short. the relay being shorted will not allow power to even go to the power supply on/off switch. you can test with a mulitmeter, just be care full, black/groung lead grounded to chasis (a must!!!!!! can use a screw hole to stick the test probe in). then set your meter to read 200 ac volts and touch off on a leg of the switch, etc. look at your readings and see what kind of voltage is rolling thru. you should be getting close to 120 acvolts. carefull!!! if nothing then the problem is before the switch, relay, power resistor, diode, etc. The worst case would be a transformer but i am not to sure line 6 power schemes. the relays are hard to find, you should have part numbers on it, for parts goto you can get almost anything.

Posted on Jan 31, 2010


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1 Answer

Its not the internal fuse or plug fuse, their both ok. Just got no lights and only solid black boxes in the LCD display.

Hi there. Switch Mode Power Supply failure. Probably cooked power MOSFET. Only uses PCB to dissipate heat. POOR design and I told them so. (Line 6)

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1 Answer

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1 Answer

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