DixieMan1994
Active Member
I can get the leads in there but the transistor sits at an angle
I can get the leads in there but the transistor sits at an angle
I presume the 2073 you are having trouble with is Q3 on the edge of the board. Like Jheu said flip the heatsink around 180*. The hole on the heatsink IIRC is offset to one end so you'll have some space on one way and not enough on the other. You want the longer side (hole to end) facing UP away from the board.
If you need to drill a new hole, Install the transistor so it's sitting straight up (or as close as you can to vertical), then set the heatsink behind the transistor on a couple of pieces of paper (shims) and mark the hole on the heatsink. Drill and then clean off the burrs. Then get the TO-220 kit and install. IF the heatsink won't work, then RATSHACK has a black finned heatsink you can use. Actually it works quite well. I've used it on my 790 for the voltage regulators (which you can fry eggs on), and they stay cool. a computer heatsink cut down to fit will work.
I would have re used the old one but the thermal grease on it was so cooked on there that I would have been scraping for a good while to get it off