Data east issues

riarcadez

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Good evening. Picked up a data east Batman. With a few issues. 1) there's a coil at the ball shoot that automatically shoots ball on to play field at multi ball. Not working. So you would have to shoot ball manually for multi ball. At a closer look there was a wire off the coil. So I soldered wire back to coil. That blew a fuse 4amp on a board in back Box and flippers were weak. So was disconnected for a reason.lol. Replaced fuse disconnected the wire from coil
And flippers worked fine. Would this be I board or wire issue? 2) all outs on sound board cut short and sometimes load cracking sound distortion. 3) insert lights not working. I was told by seller that is a coin door wire issue. Any help with any of these issues would be a big help. Thanks in advance. 
 
1 - Identify fuse thats blowing (what circuit is it for?), test coils in question with multimeter in ohms (compare to rating of coil part #), look for shorts (broken/frayed wires grounding out where they shouldn't be, possible wires soldered to wrong lugs), on driver board identify the output transistors for coil in question, I can't recall how this era sends its signals but usually its a ground circuit with a pre amp transistor (TO-92 package) and a drive transistor (T-220 package). Test these transistors for shorts, look for solder bridges, exc. Do the same for your flipper circuit (this may be a separate board or may be powered off the driver board) Look in manual/schematics for this info. If you identify the transistors for firing the auto launch coil then you could isolate the playfield by unplugging all the rows/columns and momentarily ground out the drive transistor to see if it blows the fuse. If it does then this is an issue in the back box wiring/pcb not the playfield. You may be able to isolate the issue to a certain area based on identifying the fuse thats blowing and what its powering.

2 - Pull board and look for cold solder joints. Remove old solder and add new to all header pins. Look at connectors (IDC may have bad connections). Filter caps may need replacing.

3 - Identify the circuits in question. What fuse powers them? Does the fuse test good? Test voltages on an insert? is it dead?
 
The above poster pretty nailed much what you asked...

The sound calls out issue could be that ribbon cable as well. I had an issue with the audio callouts on mine; the issue was the header pins on the sound board. The insert lamps I bet are the header pins that go to the driver board or PPB board as Data East calls it. Like the majority of pins from this era, sooner or later, header pins will need to be replaced. I had a world of issues with my buddies Star Wars pin; I would say header pin replacement and connectors addressed 3/4 of the snafus.
 
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