Hopefully someone can help with this one as I am new to working on Zaccaria's and have a Magic Castle that will not boot. I am looking to see if this is due to the power supply board or potentially the CPU.

I have tested the voltage from the transformer and they all looked ok.

Red / Red = 167v
Yellow / Yellow = 10.8v
Green/white / White/Green = 7.1v
Blue / Blue = 43.6v
Brown / Brown = 9.83v

The voltage at the test points on the Power Supply Board had a couple of points that looked out of spec and I was wondering would this cause the Power Failure to stop the machine booting.

TP1 - 198v - Tested this again later and it was showing 220v although display was disconnected so may be to no load
TP2 - 9.16v
TP3 - 5.9v
TP4 - 5.1v
TP5 - 38.1v
TP6 - -5.19v
TP7 - 4.95v

TP7 is also showing a high signal when tested with a logic probe.

As a starting point do I need to rebuild parts of the Power Supply Board. Looking at the results the High Voltage and 12v are off where they should be.

Any guidance is greatly appreciated as looking forward to getting this machine working.

Ok thanks for the information. I will order the parts and replace what is needed. Is it also worth replacing C1 while I have the board out.

What is everyone using as a TR1 2N3584 alternative on the power supply board.
There is a tip49 installed currently on this board although need to test if it is ok.

I am about to order some parts so thought I would grab some spares.

Thanks everyone for all your advice. I have parts arriving hopefully tomorrow so will let you know how I go.

Thank you for everyones help to date.

I have just rebuilt most of the HV circuit and the HV is now at 188v down from 220v. Is this now an ok level or does it need to be lower. I haven't changed TR1.

I am still low on the 12v circuit. I am now showing 10.9v which is up from the 9.1v I was getting earlier. I have changed the P2 and not sure if I need to change the 2x 10,000uf 16v caps.

Any advice would be greatly appreciated.

I have just checked the voltage at positive P2

Under load (all boards plugged excluding driver board) I have got 11.4v but it quickly drops to 10.8v

With no load (all other boards unplugged) it is sitting at 13.04v

I was wondering given the age of the capacitors C6 & C7 could this pull it down when under load.

The CPU has the LED on with the displays showing zeros. I have disconnected the sound board and I still have the same problem.

Could it be an issue on the CPU. Sorry this is the first Zaccaria I have worked on, I really appreciate the time to assist me.

I have now tried the Board Installation and Game Setup process and was not able to get anything to start or change from the current state of zeros. I am guessing there is an issue on the MPU. Is there a process to follow for trouble shooting these types of issues. I am used to B/W machines so this is all new to me.

Has anyone had an issue where the cpu locks on solenoids.

I am working on a Magic Castle (power supply fixed and interface board fixed). Using a working CPU I am able to play a game and everyting works as it should.
When I install the original CPU the machine boots although at least 3 solenoids turn on and stay on. Has anyone seen this before as i am not sure where to start looking with this one. I am new to Zaccaia so still finding my way around these boards.

I have not installed NVRAM although I have replaced IC 5 due to battery damage. Maybe I will try another 2114 in there jiust incase it is bad.

I have just tried another 2114 and have the same issue.
Is there another part of the hors I should be looking at. I have checked the 3081’s and they measure ok as I have seen these hold solenoids on a early SS Bally. Can the 4028’s cause any issues.

Ok thanks. I will look for a replacement 6514 and will remove/replace the socket.

Are there flipper rebuild kits avaialbe for Zaccaria's. Looking to rebuild some on a Magic Castle although I am not able to find anything at the usual on line parts suppliers.

Ok. Thanks I will give that a go.

I am looking to replace the flipper EOS switches on a Magic Castle including the stack.

Is there an alternative part / part number that people are using when sourcing the EOS parts. I have looked at the usual places although not sure what is a suitable replacement.

Thanks, I was thinking this may be the case.

Does anyone have any part numbers of what Gottlieb switches they have used for EOS switches in the past. Just looking to get the correct configuration for the stack.

I need to adjust the EOS stack (right flipper) on a magic castle and was wondering how they are to be configured. Mine are as per the following.
- First switch closest to the flipper is closed and then open at end of stroke.
- The middle switch looks to be always closed (not sure if this is correct)
- The top switch is open although closed at the end of stroke.

I am not sure if this is correct and it seems weird the middle switch is currently closed always so thought I would double check.

Any advice or photos would be of great assistance.

Sorry for the repost.
Is there anyone who can assist. Even a photo will help.

Should the middle switch on the right hand flipper switch stack be open or closed when the flipper is in the resting position.

C2991700-E78D-49D0-AFCC-E64FF3DB5473 (resized).jpeg

Perfect, thanks for the detail.