(Topic ID: 91385)
Linked Games
Pink Panther
Gottlieb, 1981
Topic Gallery
Edmonton, AB
Yes the large under-playfield driver transitors could be your problem. Test them with a meter and see if they
are shorted.
Split
You can try it simple.. (with power off) disconnect one side of connector between MPU and driver board..
Turn power ON and see what happens
After that - (with power off) remove ALL connectors from driver board !!!!!
Turn power ON and see....
If solenoids are still locked replace those 2N5875 transistors !!
Greetings from Croatia 
Shit. I replaced the two 2n5875s, and still it's locking the coils on at start up.
grrrr.
Could it be stemming from a bad rectifier? Or is there another possibility?
At least it's only the left solenoid that's acting up right now. The new transistor seems to be helping the right ball lock.
I still get the same lights on the driver board as in the photo above.
I also get locked on even if the CPU or the driver board is disconnected.
This is really frustrating.
Quoted from cro_pinman:You can try it simple.. (with power off) disconnect one side of connector between MPU and driver board..
Turn power ON and see what happens
What's happens in this case ?
(or I did miss something ?)
If left ball capture locks without ANY connector plugged at driver board, problem MUST be in 2N5875 transistor,
or resistor on base ( BTW.. did you replace left capture transistor - check whether the emitter and base are properly connected )
(now,right lock working properly ? )
Yes I replaced the two transistors, both left and right. The right no longer locked on. Could the new one be bad out of the box?
Quoted from Tridentphoto:Could the new one be bad out of the box?
Possible, but I doubt ,in my practice of over 30 years of repairing (not only pinballs), perhaps happened - once)
(maybe, you are "lucky man" ? )
but...
Quoted from cro_pinman:check whether the emitter and base are properly connected )
Because - wire colors are very (VERY !!) similar !
------orange - green - green --------- (connected to emitter )
----------------green - yellow - yellow ------- ( connected to base )
)
And "little" observation.... resistor - wow...have you ANY resistor on transistor's base ?!? )
If you have ANY resistor in range from 470 Ohm to 4,7KOhm - solder it (power off -off course )
between the base and emitter, (NOT collector - housing !!)
Check with ALL driver's board connectors - disconnected !
Quoted from Tridentphoto:To clarify, you suggest putting the resistor between the two pins on the transistor right?
yes
Quoted from cro_pinman:------orange - green - green --------- (connected to emitter )
----------------green - yellow - yellow ------- ( connected to base )
(between this wires)
Do you have DMM ?
EDIT: !!!!!!
When I said..
"If you have ANY resistor in range from 470 Ohm to 4,7KOhm - solder it (power off -off course )
between the base and emitter"
Word "ANY" is for TEMPORARY ("handy") resistor, standard (Gottlieb's) value is 4,7Kohm
make sure transistor has proper insulator on it . that is important or it will short itself. also, replace the wire wound resistor in line with that transistor.
I'll get on that by the coming weekend. I'm super swamped right now for the next 4-5 days.
Thanks for the advice guys.
For crying out loud man! The resistor was just the trick to keep the solenoid from locking on during boot up, however, the solenoids don't work at all now.
And I can get the lights to turn off by doing this
Also there's no sound. God I hate Gottlieb stuff. It's so Greek to me.
I am at the mercy of the group here.
Gardner, MA
I'm just going to clue you in to a Mars God of War I had...
I spent countless hours under the hood of that game, despite it being in MINT condition...it had a similar problem. Finally, had found that what looked like a factory wired up connector, in fact had a wire in the wrong place! That's all it took. Probably why It was mint, it could never be played.
good luck, you have my pm...
Is it possible that there's a design flaw or incorrect part on your board? I noticed another thread that seems to have the same board and same LED issue. Sure as heck can't be a Canadian issue. 
http://pinside.com/pinball/forum/topic/haunted-house-blowing-solenoid-fuse-on-start-up#post-1698176
Steve
Quoted from Tridentphoto:And I can get the lights to turn off by doing this
Definitely a problem with this board, if there any guarantee?
(unfortunately, with these boards I have not any experience )
Quoted from Tridentphoto:the solenoids don't work at all now
ALL solenoids, or..... ? (check 24V fuse)
Quoted from Tridentphoto:Also there's no sound
Keep calm....(turn power off ) and check ALL connections from SPEAKER (drawn wire ? ) connectors on driver board...ALL connectors (sound commands goes trough driver board,from J1 via J5)
(also re-connect ALL connectors at bottom of cabinet !! )
Turn power on and check +5V voltage ON driver board
And of course, can you find one good driver board (tested) ?
I'm about to set it on fire. I'm at my wits end with this thing. I need someone smarter than me to look at it.
The right solenoid doesn't lock on at startup like it did before I replaced the transistor, but it is still drawing power. It's not enough to pull the coil rod, but if you manually assist it, it will hold it there.
It does this with nothing attached on the MPU or power driver board too.
...sound is back ?
....did you reconnect ALL connectors (ESPECIALLY !! ) at bottom of cabinet ?
.....added resistor is STILL connected on transistor which drawing power ? (value of resistor ? )
And YES...you (probably) have "famous" Gottlieb's ground issue, if you have (some ? ) patience
you can fix it (of course, soldering skill is necessary)
There are few good explanations on WEB how to do it
(or call someone "pro"........ hard to say from this distance )
I had some odd sound for a bit, but now it's gone too.
I'll look into the grounding issue, but there is a few added ground lines already, so I think someone tried that ground mod before.
I have 4.7k resistors on the transistors.
I never disconnected any of the connectors in the bottom of the cab, which ones are you referring to?
And thanks for your help.
Jeff
if the backglass isn't thrashed, I'll give you a grand for the whole game as is. Cash is never frustrating.
There is a bit of flaking in the pink. But overall, I'd rather keep it than sell it. I really want it to work.
10 months later
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