Boss GT8 error

[carlin]

I'm electronic technician, I have a multi-effect GT8, when turned on shows a row of lights on the display. Anyone know what can it be? or I can check? The voltages of the internal power supply are good. Thank you

[Enzo]

Hi, welcome to the forum. Our member Juan Fahey is Argentinian as well.

Start with this:
http://bmamps.com/Schematics/Boss/Bo...ice_Manual.pdf

[The Dude]

I would check the battery and do a factory reset, first. Question: Is it just the display that's goofy? In other words, does the rest of the unit function- make sound, change patches, etc.?

[carlin]

The battery is ok, 3 volts. I can not reset or change sounds or patches. If I turn off and turn on several times, all the LEDs light up and the bank shows "88".

[carlin]

I will read the service notes tonight.. Thanks a lot.