Good evening good people.
I'm trying to repair a GK mb112 amplifier. As far as I can tell, the power amp (Icepower 50asx2 btl) is dead. On the manufacturer's website they sell for 77$ in bulk and 152$ a single unit. 152$ is too expensive. It's basically the price of a new TC electronic BAM 200. Since they sell in bulk for 77$, maybe it's possible to find them selling for around a 100$. Do you know somewhere where they sell them at a reasonable price ?
I'm trying to repair a GK mb112 amplifier. As far as I can tell, the power amp (Icepower 50asx2 btl) is dead. On the manufacturer's website they sell for 77$ in bulk and 152$ a single unit. 152$ is too expensive. It's basically the price of a new TC electronic BAM 200. Since they sell in bulk for 77$, maybe it's possible to find them selling for around a 100$. Do you know somewhere where they sell them at a reasonable price ?
What tests have you done?
Is it oscillating at 400kHZ or there abouts?
Have you got pre amp power?
Did you check the secondary diodes for leakage?
These power amplifiers, complete with power supply, are made by Bang & Olufsen and there is no service information available to the public.
Is it oscillating at 400kHZ or there abouts?
Have you got pre amp power?
Did you check the secondary diodes for leakage?
These power amplifiers, complete with power supply, are made by Bang & Olufsen and there is no service information available to the public.
The previous owner bypassed entirely the Icepower module by connecting a different power amp to the preamp directly. He managed to get the amp working, which means that the premap is working fine. I gave the module to a local technician and he said that 1/ someone already tried to repair it 2/ as far as he can tell, it's beyond repair.
That's why I decided to just look for replacement.
That's why I decided to just look for replacement.