Hi,
I have an issue with a repair,
I been told the amp works pretty good at cold winter days and not very good at summertime.
The issue is that it after a while of playing it cuts into protect, then starts working again, to be in protect again, and it goes faster frequency after the first time.
its been checked by a man referred from b2 to repair, without finding any fault.
I just checking if any encounter this problem before.
I was suspecting the ntc resistors but i used a heat gun and multimeter and the resistance goes down with increased heat. both side seems to be alike.
Any ide where to start ?
psu board, comparator circuit ? or bad MOSFET that heats more then others ?
best regards
Niklas.
I have an issue with a repair,
I been told the amp works pretty good at cold winter days and not very good at summertime.
The issue is that it after a while of playing it cuts into protect, then starts working again, to be in protect again, and it goes faster frequency after the first time.
its been checked by a man referred from b2 to repair, without finding any fault.
I just checking if any encounter this problem before.
I was suspecting the ntc resistors but i used a heat gun and multimeter and the resistance goes down with increased heat. both side seems to be alike.
Any ide where to start ?
psu board, comparator circuit ? or bad MOSFET that heats more then others ?
best regards
Niklas.
Attachments
I will try in a couple of days start testing and i will then try ofcourse reproduce the fault. but what i heard it was not feeling so hot by touch.. it even goes to protect without signal.
b2 6k
Hi, Perry,
I found the answer probably.
B2 ma6k protection issue found. - YouTube
thanks to Barevids.
did not se that video......
Hi, Perry,
I found the answer probably.
B2 ma6k protection issue found. - YouTube
thanks to Barevids.
did not se that video......