Frisky Tom with issues

CossackWarrior

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I have a Frisky Tom pcb that when powered up says RAM OK, ROM OK, but then keeps repeating this screen:

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The dedicated cabinets have an 6.3VAC transformer that comes in at input 10 and 27 on the edge connector. IIRC this controls some sort of clock/timing circuit, which causes the behavior you see if not connected.
 
I read that too and noticed that on the pinout, but also read on KLOV that 6.3v was not required to run this game. Interesting.

Strange thing, when I first powered it on, the title screen DID come up and attract mode showed up. Then I powered on and off again, and this is what happened for no apparent reason.
 
Confirmed.This PCB required 6.3 VAC on pin 10-27 of edge connector to propely boot.There is an MCU involved in the /RESET circuit activate by this voltage.
 
Cool, I'll go ahead and order this transformer. I used this same jamma adapter I made to test three Radical Radial pcbs I have, and it worked perfectly fine. The pinout is the same pretty much with Frisky Tom except that 6.3v is not spec'd on a Radical Radial pcb.

How would you wire this transformer up?
 
The two red wires are the 110v so you might want to wire it up like a regular arcade power supply. Find a power filter and what not and mount it on a piece of wood.

Like the way Bob Roberts has it with an inline fuse and power filter.

http://www.therealbobroberts.net/acwiring.html

The Black and one of the blue wires should go to the PCB I'm not exactly sure how because I don't know which wire is which on the TF. Plus I don't have the pinout of the PCB in front of me.
 
It will probably be 6.0v to 6.3v give or take I would think that it should work as long as your at least getting 6v. I haven't tried it as of yet testing my Frisky Tom PCB hasn't been high on my to do list. Also haven't had time to test my TF to see what type of voltages it was putting out.

I just wish manufactures stuck to normal voltages instead of all this craziness lol.
 
Ok, so I am building my transformer block now with good progress and following Bob Roberts instructions.

The only thing that seems to be missing from his instructions is what type and value of fuse is needed??? Any clue?
 
As far as a fuse I have looked at a couple power supplies my Berzerk had a 2amp 250v slow blow. My Tron had 3amp Fast and a few others had 3amp Fast fuses. 250v is basically standard on most glass fuses I have seen.
 
Ok, so I put together this multi-use transformer testing board, but in particular to be able to supply the 6.3volts to test the Frisky Tom pcb.

As my electrical knowledge sucks, I need some guidance on how to hook the transformer up to the power, and to the pcb. I have attached pictures of the setup and the transformer. I have no idea where to hook up the wires, as there are so many.......ughhhhh. The label on top of the transformer reads:

TRANSFORMER
MODEL: 5SN-SR

I/P: Black Red Black Red
0v 115v 0v 115v
O/P: 230v - 0V - 230v 30mA
(Yellow - Black - Yellow)
6.3v 700mA (Yellow - Yellow)
6.3v 1500mA (Blue - Blue)

There are two sets of black and red, then then on the other side there are two thick yellow wires next to two thick blue wires, and then a thin yellow, think black, and thin yellow again. Soooooooooo confusing.

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It's simple.This transformer has two primary windings and two secondary ones.
So, since you are in USA, you have to use the black and red wire for the 115V input.
As for output, you have two choices according to the power absorption if more or less 700mA.
Since we don't know how much current draw the circuit that requires 6.3VAC, I'd go safe and chose the 1500mA outputs (blue+blue)
 
It's simple.This transformer has two primary windings and two secondary ones.
So, since you are in USA, you have to use the black and red wire for the 115V input.
As for output, you have two choices according to the power absorption if more or less 700mA.
Since we don't know how much current draw the circuit that requires 6.3VAC, I'd go safe and chose the 1500mA outputs (blue+blue)

Ok, I already hooked up one set of black and red to the 115v input.

Now, as for the blue and blue. How do I hook those up to the pcb? connect them together into one line and to the 6.3v edge pin on the connector?

What about any ground from the transformer to the edge connector, is it necessary?
 
Ok, I already hooked up one set of black and red to the 115v input.

Now, as for the blue and blue. How do I hook those up to the pcb? connect them together into one line and to the 6.3v edge pin on the connector?



No, wait!You will make a short in this way :) We are speaking of alternate current so there is no polarization.Simply connect one blue wire to the relevant pin on edge connector and the other blue to a ground one.
 
Ok, hooked up the transformer, and tested the two blue wires. I am getting 6.5v AC, shouldnt it be 6.3-6.5v DC to the pcb?

Red lead to one blue wire, and black lead to the other blue wire, to test on the multi-meter, correct?

Sorry, I told you my electrical knowledge really is terrible, but I can solder really well, loool. :)

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Ok, hooked up the transformer, and tested the two blue wires. I am getting 6.5v AC, shouldnt it be 6.3-6.5v DC to the pcb?

Red lead to one blue wire, and black lead to the other blue wire, to test on the multi-meter, correct?

Come on!How can a transformer output DC from an AC source? :) You have to study a bit :)

http://www.school-for-champions.com/science/ac_transformers.htm#.V9gZn_CLTIU


Again, we are in field of alternate current, polarity doesn't matter.Set your multimeter on AC and put probes (in whatever order) on the two blu wires.You must measure around 6.3 VAC
 
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