Jungle Hunt HELP - smoke

priglmeier

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Jungle Hunt HELP - please give me feedback

I have a Jungle Hunt PCB and a JAMMA cab with an adapter. After double-triple checking the wiring on the adapter I plugged in the PCB and powered on the cab. I can hear the power supply (HAPP standard arcade type) making noise and smoking.

First, I am baffled why this is happening on a know-good setup.
Second, why doesn't it trip the fuse?
Third, I need some help.

This a Taito Jungle Hunt with the 22/44 pin to JAMMA adapter.

thanks
 
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Make sure your pin one from Taito Classic is going to pin one on the jamma cab. I think you may be inserting into the jamma harness backwards.

Kevin
 
wiring and power

Make sure your pin one from Taito Classic is going to pin one on the jamma cab. I think you may be inserting into the jamma harness backwards.

Kevin


Looks fine to me. All the power wires are routing to the correct side.
Got some more ideas? Does anyone have a picture of a JH adapter?
 
Verify with these :)

Also, Provide pic of the power supply that is smoking (should ask for earlier :) ).

Kevin
 

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power supply

The power supply is fine. I have tested this PCB in 2 working machines with no luck.

It seems like the power supply is being drained... the red light on the unit is fluctuating up and down and is making noise. I did check the voltage on the PCB and it seems low, but I am a bit afraid to turn up the power supply. it might fry it.

thoughts???
 
power

YES. It does have the same issue in both cabs. :) All other PCBs work fine in the cabs.

I did go through some of the power wiring (again)... See attached pictures The first image shows the power on the JH PCB. the blacks are grounds, the reds are +5 and the white and 1 brown are +12.

The power supply is giving the correct voltages. When I plug in the adapter to the JAMMA harness and check the voltages on the power connector (on the JH side) it is +5VDC and +12VDC. I verified that the pins from the harness JAMMA to the JH power are in the correct order and checked the markings on the PCB as well.

When the PCB is plugged in the power supply is noisy and the voltages n the PCB test point are really low. 1 VDC. The onboard adjustments do not seem to change this?

BAFFLED!?!?
 

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voltage / wires

12v on JH.. where is that brown wire going? Also, make sure grounds are going to ground.

Kevin

YUP. on the JH PCB power pins 9,11,12 are all +12VDC. The brown is connected the the +12 on the solder side of the JAMMA. The voltages are correct on the wires.

Funny. I did go through the grounds too...

ANYONE GOT A PICTURE OF THERE JAMMA ADAPTER? Perhaps some Jungle Hunt experts out there???
 
Is it possible that you mis-terminated at the power supply and have your +5v terminated on either -5v or +12v?
 
Not 'Expert' but I know the PCB well and repaired several.. I can not see the PCB causing a prob like that on its own.. that is why I'm suspect to the adapter..

Kevin
 
Not 'Expert' but I know the PCB well and repaired several.. I can not see the PCB causing a prob like that on its own.. that is why I'm suspect to the adapter..

Kevin

I certainly meant no offense. :)

Yeah, I've never had an issue like this before either. If the voltages are correct from the harness it has to be the PCB, correct?

I don't know where to go from here???

thanks for all your help.
 
Is it possible that you mis-terminated at the power supply and have your +5v terminated on either -5v or +12v?

Like I mentioned before, the power supply in 2 cabs both work fine with other JAMMA PCBs. The voltages off the harness are correct and the power supply only makes noise when the jungle hunt PCB is attached to the power. strange?
 
No offense taken... I just wanted you to know that I am puzzled to your situation. I honestly don't trust that jamma adapter, no offense, but it is made shitty. One thing is to ensure the pins on the edgeconnector (adaoter) fits the pins inside the jamma harness. Jamma harness connector can have extra space in it where the edge can move inside or not get inserted evenly.

Kevin


I certainly meant no offense. :)

Yeah, I've never had an issue like this before either. If the voltages are correct from the harness it has to be the PCB, correct?

I don't know where to go from here???

thanks for all your help.
 
No offense taken... I just wanted you to know that I am puzzled to your situation. I honestly don't trust that jamma adapter, no offense, but it is made shitty. One thing is to ensure the pins on the edgeconnector (adaoter) fits the pins inside the jamma harness. Jamma harness connector can have extra space in it where the edge can move inside or not get inserted evenly.

Kevin

I bought the adapter on ebay new. It was a Bubble Bobble adapter that I changed the wires on for Jungle Hunt. I have some better JAMMA finger boards that have the key notch etc., but I don't think that is the issue because there is no voltage on that part. I did think about it though.

When I check voltages on the PCB by the adjuster pots... the VDC pin registers +1.04 VDC and there is another pin that is labeled 13 VDC that registers +10.50 ish.

Do you think I should try to crank up the power on the power supply?
 
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I doubt if a rom was in backwards it would cause that or even z80... Without being there, It is sounding like the 5v is grounding. WOW, tell me if you figure it out.. I'm curious george here now :)

Kevin
 
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