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(Topic ID: 272907)

Horizontal lines in Display - DE/ Last Action Hero


By jordan

3 months ago



Topic Stats

  • 11 posts
  • 3 Pinsiders participating
  • Latest reply 3 months ago by jordan
  • No one calls this topic a favorite

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#1 3 months ago

Hi All,
I have a Data East -Last Action Hero pinball which i am trying to restore for a couple of years with no results.
The Covid Lockdown was the perfect time to get my soul into restoring it .
The initial problem was ... weird behavior with an Open the Door display.
After removing the battery with no sign of corrosion i installed an NVram.
With the board on my bench i stated only Pia and +5 Volts. Sometimes though the PIA was off and blanking on-Weird!!!
I recently got an ic programmer and burnt a 27512 test eprom. It worked great as supposed.
So, i figured that the CPU ROM was faulty-true after checking it on my programmer.
So i burnt a new CPU ROM V1.12 and installed.
When i fired the game , the display shows only 4 big vertical lines (with 1-2 disappearing after a short time -the left side ones ).
Is this a result of not upgrading the driver board (I haven't changed roms for Sound and display )?

I will really appreciate your suggestions as this project has taken lot of effort and time to be solved.
Someone will be my hero .
Thank you in advance ...from sunny Greece.
Iordanis

#2 3 months ago

Does the display have all needed voltages present?

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#3 3 months ago
Quoted from jordan:

Hi All,
I have a Data East -Last Action Hero pinball which i am trying to restore for a couple of years with no results.
The Covid Lockdown was the perfect time to get my soul into restoring it .
The initial problem was ... weird behavior with an Open the Door display.
After removing the battery with no sign of corrosion i installed an NVram.
With the board on my bench i stated only Pia and +5 Volts. Sometimes though the PIA was off and blanking on-Weird!!!
I recently got an ic programmer and burnt a 27512 test eprom. It worked great as supposed.
So, i figured that the CPU ROM was faulty-true after checking it on my programmer.
So i burnt a new CPU ROM V1.12 and installed.
When i fired the game , the display shows only 4 big vertical lines (with 1-2 disappearing after a short time -the left side ones ).
Is this a result of not upgrading the driver board (I haven't changed roms for Sound and display )?
I will really appreciate your suggestions as this project has taken lot of effort and time to be solved.
Someone will be my hero .
Thank you in advance ...from sunny Greece.
Iordanis

1) Does the game boot and run now but just has no display? Sound?

2) Is the display cables on correct? Red stripe on pin one in both cases?

3) What are the voltages at the display? You should see roughly this-

-110 volts
-100 volts
Ground
Ground
5.0 volts
12.0 volts
65-70 volts

The most important is the 10-12 volt separation on the high voltage pins.

#4 3 months ago

Hi Again,
The game doesn't boot although the solenoids are triggered at the beggining.
No sound.
The Display shows only 4 vertical lines that after a while disappear.
I check voltages and found
-115 Volt
-93 Volt
G
G
+5 Volt
nothing.
68 Volts.
After that i checked the fuses and i found that the 8A Slow Blow was bad.
I need to wait until tomorrow to check if this is the problem.
Oh really lets hope to be this only.
I will post the results.
Thank you again for your help.
I really appreciate this.

#5 3 months ago

Post a pic of the vertical lines.
I’m almost positive this is due to lack of 12V at pin 7. If the MPU isn’t booting then we can’t conclude much.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#6 3 months ago

Great.. we had some progress but it is not operational yet.
As i mentioned ,i found a +12 Volt missing. I checked the fuse F2 8A and was broken .It was due to a bad brigde rectifier which i changed.
Now ,i have a Fully working display.
Of course the machine has issues.
After displaying the data east Version it shows an Open the Door msg.
I close the door . Nothing.
Just to inform that i have removed recently the Battery and installed an NVram at 5D.
When the game starts all solenoids are triggered and stop.Lights also keep on flashing.
No sound at all.
I cannot start a game and in Diagnostic mode i can see only every two adjustments(00 ,02 ,04 etc )without being able to change most of them ) by pressing the game button.
My brain is on fire!!!

#7 3 months ago

Try putting the ram back, easy enough. Watch the notch location!

Make sure that the harness is connected at the #14 connector on the mpu (it is for the door interlock switch if my memory serves)

#8 3 months ago

I just changed the ram and the problem is worst.
I have only the data east Display with nothing else after.
As i remember now, that was the reason to move towards an Nvram solution 4-5 years ago!
With the Nvram i have the Open the door Message.
I have checked again the door switch and on #14 connector it gives the proper continuity when close.

#9 3 months ago
Quoted from jordan:

I just changed the ram and the problem is worst.
I have only the data east Display with nothing else after.
As i remember now, that was the reason to move towards an Nvram solution 4-5 years ago!
With the Nvram i have the Open the door Message.
I have checked again the door switch and on #14 connector it gives the proper continuity when close.

Is the MPU booting? What is the voltage and ground at the test points on MPU? What are the three leds on the MPU doing?

#10 3 months ago
Quoted from gdonovan:

Is the MPU booting? What is the voltage and ground at the test points on MPU? What are the three leds on the MPU doing?

I haven't checked yet the voltages on the game. On the bench everything was ok.

Also something else that i noticed is that i can enter only in diagnostic mode and no in Audit at all.
Also , in diagnostic mode there is an option to enable sound which is Off but there is no way to change it.
In diagnostic i can move up/down only every second number

#11 3 months ago
Quoted from jordan:

I haven't checked yet the voltages on the game. On the bench everything was ok.
Also something else that i noticed is that i can enter only in diagnostic mode and no in Audit at all.
Also , in diagnostic mode there is an option to enable sound which is Off but there is no way to change it.
In diagnostic i can move up/down only every second number

The Mpu is booting with the Pia flashing only initially for short time and then i have both +5Volt plus Blanking led stable.
I have tested on my bench with a leon test Eprom and everything was ok.
I am thinking if this is a memory problem .
I have changed the the 5 d chip with an NVram to stop using Batteries.
the memory protect switch works fine and give at 1F chip Pin 11 a high Low Pulse (With the door switch closed otherwise Low ) ,Pin 12 High Pulse and 13 inverted a Low Pulse.
It ends to have High pulse at pin 27 5D cmos ram even if the door is closed or open.

Also , when i plug off the Cn21 ribbon cable i get the sound "I'll be here". So the sound board should be working.

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