Started from the connector end of
the case. On this first segment I added
another screw to hold the heat sink
in place besides the two that actually
mount the transistors. This was as
much to hold it in place while I was
working it as it was to assure that the
front of the heat sink was held
firmly in place because the transistor
screws were to one edge of the
heat sink.
Also I had to lower the first two
screws a little more than the six
others on this side because they ended
up too close to the edge of the heat
sink. |
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| Took a bit of fussing to get that
extra screw between the fins. Had to reduce the size of the head
to get it to fit in there. You can also see that the transistor
mounting screws are somewhat close to the edge but there is sufficient
material around the tapped hole. |
|
The lower edge ended up a little close to
that ridge across the bottom of the case but there is sufficient room
for the thermal insulating pads. You cans see where the first screw
popped through.
You cans also see here some of the measuring I
had to go through. I drilled holes into the old PCB where
the TO-220 will actually mount just to make sure all fit well. Would
have been a bit easier with the actual PCB but I had time to do it so I took it. |
|
| Few of the steps in the process.
After marking and drilling pilot holes in the case I positioned and
clamped the head sink segment to the case. Then from the inside I
marked the the heat sink. |
|
| After drilling I tapped the holes to accept
a 4-40 screw. The hole in the case was also opened up at this time to
the clearance size. |
 |
| Ready to mount it into position. |
 |
| All the heat sink elements mounted.
Didn't loose any fins in the process either. Didn't expect that bit of luck. |
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