10 Jan
2011
10 Jan
'11
2:23 p.m.
On Mon, 10 Jan 2011, Pontus wrote:
2011-01-10 21:35, Zane H. Healy skrev:
Epoxy transmits heat reasonably well (better than, say, air), so the
theory was the heat produced by the electronics in the PSU would be
transmitted to the casing which would radiate the heat and keep the unit
At 9:09 PM +0100 1/10/11, Pontus wrote:
Odd, the C128 and A500 bricks are easily opened an serviced. I seem to
recall that the C64 brick broke easily, perhaps Commodore got a lot of
complaints from service shops. 2011-01-10 19:39, Tony Duell skrev:
Suddenly I'm reminded of the horrid stock Commodore power bricks where
the whole brick is epoxy. I went to a lot of effort to dig up a good
3rd party brick for my C-64 that can be easily worked on.
Zane
I am wondering just how youy make a PCB where you
can't replace the
flyback transformer....
With glue perhaps? What I should have said was that in one revision
the flyback was connected with a plug and a designated FRU (Field
Replacable Unit) by digital and in the other case the whole circuit
board with a soldered on flyback was an FRU, not the flyback itself.
- Pontus. from cooking. My understanding is due to poor design
the epoxy would
frequently separate from the inside of the casing, causing a gap
that
stopped the heat from escaping as designed, ending in heat death for the
PSU.
Given the amount of supplies they replaced, by the time the C64C rolled
along, Commodore had replaced the original bricks design with a better
one.
As I understand it :)
- JP