Hi all, after reading miles of posts I decided to ask you something:
Last week I've bought from a friend a MC302 poweramp and a C220 pre (this is still under official warranty 'till 2023).
He has not used them for months and decided to sell them.
They are in really near mint condition, but there's something that concerns me.
The poweramp's left heatsink runs hotter than the right one (turned on idle after one hour 37°C vs 29°C). I don't know if I am paranoid but I think there could be a bias mismatch.
I've tried to find the answer and the service manuals online but is quite impossible to have them.
'Cause it weights a lot I don't want to ship it to the service center and I would try first to check the current by myself and see if there's a significant difference between the two channels.
My question are:
1) am I paranoid?
2) trying to measure the current on both the channels, do I have to do it just after turned the amplifier on or I have to wait X minutes?
3) if the hottest channel bias current is significantly higher then the other one, can I level it as the lowest?
Thank you all in advance and I hope you can help me.
Greetings from Sicily
Last week I've bought from a friend a MC302 poweramp and a C220 pre (this is still under official warranty 'till 2023).
He has not used them for months and decided to sell them.
They are in really near mint condition, but there's something that concerns me.
The poweramp's left heatsink runs hotter than the right one (turned on idle after one hour 37°C vs 29°C). I don't know if I am paranoid but I think there could be a bias mismatch.
I've tried to find the answer and the service manuals online but is quite impossible to have them.
'Cause it weights a lot I don't want to ship it to the service center and I would try first to check the current by myself and see if there's a significant difference between the two channels.
My question are:
1) am I paranoid?
2) trying to measure the current on both the channels, do I have to do it just after turned the amplifier on or I have to wait X minutes?
3) if the hottest channel bias current is significantly higher then the other one, can I level it as the lowest?
Thank you all in advance and I hope you can help me.
Greetings from Sicily
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