PLAYBOY (BALLY) sound problem

[Ace]

Hi guys,

I have just finished restoring my old Playboy, every thing runs and plays great, the only problem is the sound is wrong.
It sounds a bit out and has 2x small tunes at the end.
I have checked all test points on all boards.
Borrowed Pinfrog's MPU out of his Playboy the same thing happening,i thought it might be the game roms.
here are the volts checked at the sound board:
TP1: 5VDC
TP2: GROUND
TP3 +11.9 VDC
TP4 +41.7 VDC
TP5 -21.1 VDC (I think that this should read +42vdc??)

I tryed another AS2518-32 BOARD the same ??

Can anyone help me on this please?

Thankyou

Ace  

[Mr Pinbologist]

-21 volts on TP5? TP5 is the ground return for the main filter capacitor to the transformer board (J3 - 19) so should be zero volts. It maybe as simple as cracked solder joints on the header pins on your sound board or transformer board, or broken wire/connection between your sound board and J3 pin 19 on the transformer board, so id say check that first.

hope this helps...

Cheers...Mitch

[Ace]

-21 volts on TP5? TP5 is the ground return for the main filter capacitor to the transformer board (J2 - 19) so should be zero volts. It maybe as simple as cracked solder joints on the header pins on your sound board or transformer board, or broken wire/connection between your sound board and J2 pin 19 on the transformer board, so id say check that first.

hope this helps...

Cheers...Mitch

Hello!

Up date on the sound on Playboy.
Check for cracked solder joints as i have put new pins on the transformer board and connectors.
check sound board for cracks.

I changed the solenoid driver board (AS-2518-22) from my Kiss and the tune sounds different again still with 2x tunes at the end.
i would say that its not the driver board, but why is the tune different?

so it can only be sound and transformer board.

why is the Tp5 not reading right?

what should i check now?

thanks for the help.

Ace.

[JD]

If you don't get it sorted, (Ken) Skybeau on this forum is an absolute wizard with these boards and if you send him a PM, I am sure he would gladly help you.

J.D.     

[Ace]

Hi Guys,

just changed over the power unit (transformer and rectifier board) still the same problem.

these are the boards i have changed:

Playboy MPU board.
solenoied board
Rectifier board

still the same??

Any ideas??

Ace.

[Strangeways]

Check the wiring to the chime box coils.

Was the sound working fine before starting the resto ?

[Mr Pinbologist]

-21 volts on TP5? TP5 is the ground return for the main filter capacitor to the transformer board (J2 - 19) so should be zero volts. It maybe as simple as cracked solder joints on the header pins on your sound board or transformer board, or broken wire/connection between your sound board and J2 pin 19 on the transformer board, so id say check that first.

hope this helps...

Cheers...Mitch

Hello!

Up date on the sound on Playboy.
Check for cracked solder joints as i have put new pins on the transformer board and connectors.
check sound board for cracks.

I changed the solenoid driver board (AS-2518-22) from my Kiss and the tune sounds different again still with 2x tunes at the end.
i would say that its not the driver board, but why is the tune different?

so it can only be sound and transformer board.

why is the Tp5 not reading right?

what should i check now?

thanks for the help.

Ace.

As i said, TP5 should read close to zero volts. Did you repin the connectors for the transformer board at all??  If you did, maybe you got the ground return wire (J3 - 19) in the wrong spot?? Maybe check that! its all i can think of for now..

Oh btw i just realised id said J2 in my reply before but i meant J3 on the transformer board.. sorry about that
 ...

[Ace]

Check the wiring to the chime box coils.

Was the sound working fine before starting the resto ?

No chime box in playboy, the machine was not starting up before i started the resto.

thanks.

[Strangeways]

Check the wiring to the chime box coils.

Was the sound working fine before starting the resto ?

No chime box in playboy, the machine was not starting up before i started the resto.

thanks.

 

For some reason I kept thinking it was an Eight Ball.

Check the wires going to the speaker. If you have a spare speaker, swap over to test.

TP5 is still an issue.

[Ace]

Hello,

I have check the wiring its all good J3 -19 the right colour.

I did a test on the Kiss sound board.

TP1: 5.2 VDC
TP2: GROUND
TP3: 12.4 VDC
TP4: 42.1 VDC
TP5: +18.4 VDC (SOL RETURN)

TP5 is the same on the kiss as well, it has writen next to the test point 5 "43 vdc sol return"
whats this for??

I dont know?? the Kiss works fine.

Ill try another speaker tonight , the one in there is new anyway. ill try anything at the moment.

Thanks for your help on this every one!
please let me know if there is anything you might think off.

thanks!

Ace.