Quoted from Startek2:
make sure you don't have a shorted socket.....replacing the tip102will probably fix it....you can measure the pre driver to see if it is shorted....look out for burnt traces!
So I pulled the board, while I had it out I used my Hakko to remove the on board battery box and soldered in a remote one
I also replaced TIP102 at Q16 and the predriver at Q12 but now the draw poker flasher lights simply don't work at all (before they were locked on)
You were right about burned traces. Looking at the board installed, I believe that the TIP102 Base is left, Collector center and emitter is right. (Check me on that)
The install on the Q12 (2N4401) was a breeze, Hakko out, iron in, flush cut the leads - done.
The install on the TIP102 was not simple. Here's the issue and another question.
The center leg trace was definitely lifted, but still appeared intact, so I fed the leg thru the lifted trace
The right leg (again, viewed as board installed in game) thru hole was so blown out that as I added solder to the heated pin, it appeared it wouldn't stick.
I was wrong because what it was doing was dropping into the wide thru hole and collecting below and building up across all 3 legs - ugh
I unsoldered it, cleaned it for another try - this time, I took a close look at that pin and it looked like this leg was grounded so I flipped the board and scratched the coating nearby the thru hole to expose some of the ground below. I then tried again.
The left leg soldered normally
The center leg seems OK, but trace was lifted
The right leg I was able to get some solder onto the leg and from the leg to my scratched off/exposed ground on the board.
I reinstalled but now the flashers don't lock on, they just don't come on at all
I have zero confidence that the TIP102 is soldered with a good connection ....so
How can I test continuity with this (can I?)
Am I right in assuming the right leg is the emitter and its grounded on the board?
Cant I just add jumpers to this?
If so, what gets jumped to what?
Sorry for the 20 Qs but I know that I'm close to sorting this but it looks like that blown transistor did some damage when it went out and I'll need to be creative to fix it
Pics below of new remote battery holder install and the blown out transistor
IMG_3759 (resized).JPGIMG_3766 (resized).JPG