Hi all,

I recently picked up a Funhouse and have started going through and cleaning it up. I am trying to learn as I go without making expensive mistakes.

None of the flashers were working and the fuse at f111 was obviously blown. After replacing the fuse and powering on the blue flashers lit up brightly and stay lit. All of the other flashers tested fine (clock, dummy, superdog, red, and white).

I thought it may be a bridged/crossed connection on one of the blue flashers. Well, visual inspection to my untrained eye didn't reveal anything.

Any help or guidance is appreciated.

Thanks DocRotCod! I'll be testing the transistor today. Hopefully that's the issue and within my skills to fix.

Thanks for the additional information Chris and phillymadison - very helpful (saved my inserts ).

I located the TIP102 at Q42 and followed this test (from pinball rehab):

"NPN transistors, left lead is base (i.e. - TIP102, TIP120, TIP121, TIP122, 2N6045 and SE9302 )*

Put the DMM's red lead on the left leg of the transistor*.
Test to the middle leg and the right leg with the black lead.
You should get a reading between .3 - .9 volts on each (the two reading should be about the same).
Put the black lead on the left leg of the transistor.
Test to the middle leg and the right leg with the red lead.
Your DMM should read open on each.
Test across the middle and right legs, you should get an open reading.
Reverse leads on the middle and right legs, you should get an open reading.
* Orient the transistor with the metal tab facing away from you and the leads pointing down."

The results of my testing were wildly inconsistent (ranging from open to .290), even when I test against other TIP102s on the same board. My DMM works as expected when testing other transistors (NPN with center base).
Anything I am obviously doing wrong from the directions above or advice on testing the TIP102?

Thank you.

OK - I finally confirmed that the TIP-102 at Q42 is bad (as suspected). I do have a lot to learn.

I have had some PCB soldering experience, but am going to approach replacing this with caution.

Thanks again for all the input.

Update:

I took my time with this, labeled all the connections coming off the power driver board and removed the board. I carefully removed the TIP-102 following the instructions from PinWiki and desoldered the remaining legs.

Cleaning up the through holes was a real challenge for me - I only have a simple solder sucker, but between that and some solder wick I managed. I'm sure with experience it gets easier, but with this being such a pita I'm planning on investing in a Hakko FR300.

Soldering in the new component was simple enough.

Putting the board back in and powering up...moment of of truth: Game still plays and all the flashers with the exception of the blue flashers work. The blue flashers are no longer constantly on, but they don't light up either. I checked individual bulbs, but just those darn blues aren't lighting up.

So, I'm not really back where I started, but still working on it.