Hey.
My friend dropped off a GTO 14001 amp. It had lots of dust and some visible moisture damage inside which i cleared up. Did some reflow on solder joints that looked a bit bad but didnt find any cold solders. When amp is powered up it stays in protect but it seems to be fully working. I have correct switching on all the output fets but relays dont kick in. Only thing bothering me is that +/- voltage in the preamp/driver cards is +9.6V and - 14V. Removing driver cards and changing voltage regulator didnt change a thing. All the diodes check out fine in the psu section where secondary voltage is generated. Nothing seems to be heating up either.
Has anyone had any similar problem with this JBL series amp? Any ideas what to check next when output is switching but staying in protect?
My friend dropped off a GTO 14001 amp. It had lots of dust and some visible moisture damage inside which i cleared up. Did some reflow on solder joints that looked a bit bad but didnt find any cold solders. When amp is powered up it stays in protect but it seems to be fully working. I have correct switching on all the output fets but relays dont kick in. Only thing bothering me is that +/- voltage in the preamp/driver cards is +9.6V and - 14V. Removing driver cards and changing voltage regulator didnt change a thing. All the diodes check out fine in the psu section where secondary voltage is generated. Nothing seems to be heating up either.
Has anyone had any similar problem with this JBL series amp? Any ideas what to check next when output is switching but staying in protect?