pete_mac
Super Member
Hi all!
I usually hang around in the Sansui section mainly, but I recently had the privilege of working on a CA-1010 owned by 'The Fez'. She's a beauty and is in very very good condition for its age.
A peek under the cover:
A pair of big 18000uf power supply filter caps:
Note the level of detail here. The knobs on the front panel are connected to the switches on the actual PCB via metal rods and universal joints. The bean-counters wouldn't allow this kind of stuff these days!
The underside of the amp:
Some of the capacitors that will be going inside this sucker. Panasonic FC and FM caps, some Panasonic ECQ-V film caps, and also a bunch of Nichicon Muse ES bipolar caps and Nichicon Gold Tune 22000uf power suppply filter caps:
The driver boards are a bit of a pain in this model as the output transistors are mounted through the heatsink and into sockets on the driver board PCB. This necessitates the removal of the output transistors to access the rear of the driver boards. The upside is that there is no excuse for not fitting new thermal paste to each of the transistors when reinstalling them. The heatsinks look small in the pics but they are quite chunky with lots of thermal mass.
One set of output transistors:
New capacitors fitted to a driver board:
The VD1212 diodes have also been replaced with a pair of series'd 1N4148 diodes which perform the same function and have the same voltage drop as the original VD1212s. These are more reliable and help to keep the bias rock-solid.
The power supply/protection board has been fully recapped now.
I usually hang around in the Sansui section mainly, but I recently had the privilege of working on a CA-1010 owned by 'The Fez'. She's a beauty and is in very very good condition for its age.
A peek under the cover:
A pair of big 18000uf power supply filter caps:
Note the level of detail here. The knobs on the front panel are connected to the switches on the actual PCB via metal rods and universal joints. The bean-counters wouldn't allow this kind of stuff these days!
The underside of the amp:
Some of the capacitors that will be going inside this sucker. Panasonic FC and FM caps, some Panasonic ECQ-V film caps, and also a bunch of Nichicon Muse ES bipolar caps and Nichicon Gold Tune 22000uf power suppply filter caps:
The driver boards are a bit of a pain in this model as the output transistors are mounted through the heatsink and into sockets on the driver board PCB. This necessitates the removal of the output transistors to access the rear of the driver boards. The upside is that there is no excuse for not fitting new thermal paste to each of the transistors when reinstalling them. The heatsinks look small in the pics but they are quite chunky with lots of thermal mass.
One set of output transistors:
New capacitors fitted to a driver board:
The VD1212 diodes have also been replaced with a pair of series'd 1N4148 diodes which perform the same function and have the same voltage drop as the original VD1212s. These are more reliable and help to keep the bias rock-solid.
The power supply/protection board has been fully recapped now.