sgtpetter
New Member
Hi all, this is my first post.
I have an Audiolab 8000A and want to install the "Preamp output muting" relay mod as described in a service manual that I found here: https://www.hifiengine.com/hfe_downloads/index.php?audiolab/audiolab_800...
However, I've got a newer version than the manual, it has serial No. 207B91454 and has the CST207-018 Issue 8 board, PCB No. 41811.91. I think it's called the Mk3 – one of the last versions built in the UK – black front with added video input. But I can't find it's schematics for it anywhere.
The board has been redesigned, but the circuit still looks 98% similar to the old version. So I'm guessing that I can still do the mod I want, even though all the part numberings has been changed over time.
My questions:
1. According to the old manual, I'm supposed to place a relay at RL2. But there is no RL2 on my circuit bord, but RY2 instead. Is this the same thing?
2. If RL2 is identical to RY2, can I still use the same 48V 2PCO 4000 ohm relay?
3. To power the relay coil the old manual says that "The two points marked RL2+ and RL2- (adjacent to relay RL2) must be wired to the corresponding points marked RL2+ and RL2- adjacent to the main relay RL1". However, there is no RL2+ nor RL2- on my board. But I suspect that P998 and P997 is the new names, and that the empty P995 and P996 are the points to get the power from. Am I right or wrong?
P.S. If someone could send me the schematics or service manual for my version, it would of course be awesome.
Thank you.
I have an Audiolab 8000A and want to install the "Preamp output muting" relay mod as described in a service manual that I found here: https://www.hifiengine.com/hfe_downloads/index.php?audiolab/audiolab_800...
However, I've got a newer version than the manual, it has serial No. 207B91454 and has the CST207-018 Issue 8 board, PCB No. 41811.91. I think it's called the Mk3 – one of the last versions built in the UK – black front with added video input. But I can't find it's schematics for it anywhere.
The board has been redesigned, but the circuit still looks 98% similar to the old version. So I'm guessing that I can still do the mod I want, even though all the part numberings has been changed over time.
My questions:
1. According to the old manual, I'm supposed to place a relay at RL2. But there is no RL2 on my circuit bord, but RY2 instead. Is this the same thing?
2. If RL2 is identical to RY2, can I still use the same 48V 2PCO 4000 ohm relay?
3. To power the relay coil the old manual says that "The two points marked RL2+ and RL2- (adjacent to relay RL2) must be wired to the corresponding points marked RL2+ and RL2- adjacent to the main relay RL1". However, there is no RL2+ nor RL2- on my board. But I suspect that P998 and P997 is the new names, and that the empty P995 and P996 are the points to get the power from. Am I right or wrong?
P.S. If someone could send me the schematics or service manual for my version, it would of course be awesome.
Thank you.
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