This is a follow up to my recent post about the redesigned Beogram Commander remote control board, which now works in both (DC-motor) Beogr...
Sunday, September 2, 2012
Beomaster 8000 Main Reservoir Caps Replacement
Time to go fully under the hood! Like for my second Beomaster 8000 I replaced the four main 10000uF capacitors with the 105C ECES1JA103EZ Panasonic type, which have almost the same size. Here is a shot comparing old with new (one of the new ones is already wrapped with some cardboard to compensate for the slightly smaller diameter...):
This time I changed my routine a bit. For easier access on the right side, I also unbolted the right bridge rectifier. This made it easier to get to the solder tabs of the caps. Last time I ended up ripping off a wire from the rectifier when removing the back cap. This picture shows the rectifier dangling and the cap below already unsoldered.
I measured the ESR of the old ones. These were in pretty good shape with all four measuring only 0.08-0.09 Ohm (pretty much identical to the new ones).
Here some pictures taken during the installation.
After taking the right heat sink off:
Unfortunately, it seems almost impossible to get large caps with big solder tabs. The new ones have much smaller tabs. Here a picture showing the smaller tabs bent to clamp the wires in place before soldering:
This picture shows the caps on the left side fully installed: