(Topic ID: 197992)

LEDs for Al's Garage Band Goes on a World Tour

By WhiteChili

6 years ago


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There are 64 posts in this topic. You are on page 1 of 2.
#1 6 years ago

Hello everyone! It's my first post. I own a Gottlieb Genie, Bally/Midway Lady Luck, and Al's Garage Band Goes on a World Tour. It's the World Tour I am having trouble with, and need some help. It has the main issue that I think most people have with the PSB burning up the 9 pin and has killed a part of my GI. That's not my current problem though. This evening I received my order of LEDs from Pinball Life and began installing them. At first they worked fine but all of a sudden the 44/47 lamp sockets would not light up anymore with LeD bulbs installed. I can put an incandescent bulb back in and it works but swap it back out for an LED and it doesn't work. It's got me puzzled, why would they work for about an hour, stop suddenly, but the lamp socket is still good and power an incandescent bulb? I verified that LEDs still work by placing them in my Genie. Any thoughts? By the way I am planning on replacing the PSB. Thank you in advance for any thoughts or help with this issue.

#2 6 years ago

Oh I forgot to mention, the 555 LEDs work fine.

#3 6 years ago

All LEDs do not work in GI lamp section. You need to make sure they work with AC voltage since GI normally run at about 7VAC.

Can you post a link to the LEDs with trouble?

#4 6 years ago

Did you order non ghosting bulbs?

#5 6 years ago

Www.pinballlife.com Ablaze 1-LED #44/#47 Bayonet Base Lamp With Concave Lens are the type of bulbs I purchased.

#6 6 years ago

Ok I seen them. I don't think those are not meant for GI lamps. Look ok to be used as insert lamps.
http://www.pinballlife.com/index.php?p=product&id=1881

Straight from their site.
All of our LEDs are guaranteed to work and will be replaced if returned (at buyer's expense). Return shipping to customer will be paid by Pinball Life.

#7 6 years ago

I spoke with the PinBall Life people today and they felt like they should work. The 555 wedge ones do, I'm just at a lose. I suppose I need to find a new PSU and try that.

#8 6 years ago
Quoted from WhiteChili:

The 555 wedge ones do

Where are these 555 wedges ones located in your game?

#9 6 years ago

I think you should send them back and put the money toward better ones. http://www.pinballlife.com/index.php?p=product&id=3211

#10 6 years ago

I'm sorry I don't know the name of type of boards the wedge ones are in, but they are under the playfield in sockets that you have to twist to get out. They illuminate rockandroll, the locations on the glide, and what event is running currently.

#11 6 years ago

As far as the ones I already have I think I will keep them because I have other pins I will put them in, but I do agree now that I've seen them all I would prefer the nonghosting ones.

#12 6 years ago

Check the voltage from the 2 socket leads.
On a hunch, if you have 2 alligator end jumper wires, attach to leads of socket, and hand touch to side and bottom of bulb
Try reversing the leads to the bulb.
The bulbs you purchased, may not be polarized, and the socket strand may be reversed from what you need.

#13 6 years ago

I will give this a try this evening, thanks man.

#14 6 years ago

Sorry I haven't gotten back to you on this, I came down with something that has pretty well kept me sidelined. I will be out looking at this soon. I will keep you posted.

2 months later
#15 6 years ago

So... a new problem has popped up on my machine. The DMD is not working. The PSB is sending 110 to the display. I have the same voltage coming into the display board. However going to the DMD itself, I have 68v on the high voltage pin. Is that the expected voltage? If not can someone take a reading and tell me what it is supposed to be?

#16 6 years ago

You need -112v, -100v and the 68v. So either you are missing the -100v or you did not measure it. The -112v and -100v are next to each other, but separated by the key from the other pins of the power connector of the DMD. The 2 you measured are good, just need to know what the other voltage measures.

#17 6 years ago

Thank you sir, currently watching the iron bowl and then I will go check.

#18 6 years ago

With the DMD laying facedown on the machine, reading these left to right.

Vsn -.7
Vrw .3
Key
Gnd 0
Gnd 5 <—- that one seems odd
Vcc 7.0
Vcm 11.9
Vsp. 68.1

I tested all of these as DC, but the two you told me about I tried AC as well to make sure, it still showed 0. I am not sure what types of voltages it uses because it’s my first one.

#19 6 years ago

DC voltage for sure. I don't know what you are using as a ground reference with your black meter lead but it should be on either GND pin of the DMD. A GND should not have any DC voltage reading. Try measuring them all again please.

#20 6 years ago

Also, can you post a picture of the back of the DMD and the bottom right board in the backbox?

#21 6 years ago

Will do when I get home. Thank you so mfor h for all your help.

#22 6 years ago

Kinda curious now especially at one time you had 110 volts at the DMD.

#23 6 years ago

Oh, no, I’m sorry I must have not been clear. I have 110 at the PSB and coming into the board at the bottom right hand of the back box.

Currently the voltages are the same as when I tested them the other day. This time I tested them all on DC using the GND for my black lead like you suggested. Previously I used the ground strap in the attached photos. The other photo is the board you wanted to see.

5C227788-5957-4CD6-BBB5-BD7255688262 (resized).jpeg5C227788-5957-4CD6-BBB5-BD7255688262 (resized).jpeg

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#24 6 years ago

Oh and when I used both of the GND pins on the DMD, the 5V on the GND was gone.

#25 6 years ago
Quoted from WhiteChili:

The other photo is the board you wanted to see.

No. I was actually curious of the back side of the DMD itself to see what brand it is and to tell if anything was burnt by chance.

#26 6 years ago

Here ya go

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6E371C95-B7B1-4C48-8293-B2F579914DC0 (resized).jpeg6E371C95-B7B1-4C48-8293-B2F579914DC0 (resized).jpeg

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#27 6 years ago

Make sure you do not disconnect any boards, including the DMD, while power is on. Bad things can happen.

With power off, can you measure the resistance across C8? This basically will be checking to see if there is a short between -112v and the -100v.

Also, with power off, can you measure resistance from one of the GND pins to the -112v pin and then from GND to -100v pin?

#28 6 years ago
Quoted from WhiteChili:

Oh and when I used both of the GND pins on the DMD, the 5V on the GND was gone.

Interesting. I just checked my game and I do see 5v at the DMD when I use the GND pin at the DMD power connector.

Can you check 5v again, this time put the black lead of the meter on the ground braid wire in the bottom of the backbox?

#29 6 years ago

On a setting of 200k I got a reading of 131.9 at the C8 resistor. No setting lower would give me a reading. After retesting the GND, using the black lead on the ground strap, the 5V is not there.

#30 6 years ago

The Vsn pin give 148 Set at 200k when I test it, touching the pin and GND. The other pin does not give a reading no matter the setting.

#31 6 years ago
Quoted from WhiteChili:

the 5V is not there.

Is your game going in attract mode with all the insert lamps working? If not, sounds like your game is not booting.

#32 6 years ago

At least it looks like your DMD does not have -112v or -100v shorted together as I had seen some Dale DMD's in the past. So this seems ok. So your 2 voltages appear to be failing at the DMD controller board.

#33 6 years ago

Yeah the game plays fine, just can’t see the score. I am thinking the same thing. I can track 110 voltage into the Display board at the bottom right of the back box. The 110 doesn’t come out to the DMD.

#34 6 years ago

So could this be caused by a cold solder joint? Or a dry cap?

#35 6 years ago

I had a bad female connector on the DMD controller board that I had to repin. The male header strip pins on the board could have cold or cracked solder joints. Can you pull the board and examine the header strip on the back of the board and resolder them? I normally look for crack solder joints under a magnifying glass to see them easier.

Probably best to check all the male header pins.

#36 6 years ago
Quoted from WhiteChili:

So could this be caused by a cold solder joint? Or a dry cap?

This is strange to have the game boot up since it uses 5volts.

#37 6 years ago

I can certainly pull the board tomorrow and check with my jewler’s hood for cracked solder joints. However, an old coworker of mine, we worked at a place like Chucky Cheese, said I don’t have the skills currently to solder. I always created the Solderhorn mountain when I attempted.

#38 6 years ago

Also I always have to remind myself when I am doing the testing a quote from Chuck Yeager... “It’s the man, not the machine.”

#39 6 years ago

Is this light on when you your game is running, mine is off. That is located on the display board. The light is on the bottom left. I also reheated the solder on the pins that go to the connectors. I didn’t see any cracks but there were holes. It didn’t help, the voltages stayed the same.

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#40 6 years ago

I think I am going to have to give you some more test points to check.

Al's Garage Band boards (resized).jpgAl's Garage Band boards (resized).jpg

#41 6 years ago

Sounds good. Yeah my light is not blinking on the display board

#42 6 years ago

Ok. Here is the schematic of the DMD controller board. Need to see if you can measure the missing voltages on the male headers pins. So with power unplugged I would remove the female connector J103 and see if the voltages are there. If so, then you need to repin the connector. Hopefully, you will see the -112v and -100v at the male connector. If the 5v happens to be at the connector, then the LED status light may just be out.
20171202_172438 (resized).jpg20171202_172438 (resized).jpg

2 weeks later
#43 6 years ago

Man I’m sorry, I had to go out of town on an emergency. I am getting on this today.

#44 6 years ago

The helpfulness of fellow pinsiders never seizes to amaze me

#45 6 years ago

I am not getting that voltage from the male header pins.

image (resized).jpgimage (resized).jpg

#46 6 years ago

I just had a wild idea. Is there anything I can buy that will produce these voltages?

#47 6 years ago

Just another board. I have not seen one on Ebay in about a year.

I need to check again what the input voltages are coming into the board. That defineatly will be tomorrow early evening.

#48 6 years ago

Do you think the board can be repaired?

#49 6 years ago

Yes.

#50 6 years ago

Do you know of someone or a company that can repair the board?

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