I am having an issue where my TZ says "GND SHORT ROW 1 IS STUCK CLOSED".
Over the past few weeks, the TZ was rebooting when both flippers were hit. As a bandaid fix, reseating J114 and J210 would buy me some time. Yesterday it happened and when I rebooted, I got the noted error. Read the related forums and trying reseating and starting with certain connectors unplugged with no success.
I noticed that there was some minor corrosion on one of the batteries. Mostly localized to one spot and no apparent leakage beyond the battery. I replaced the batteries and it booted with "Factory Settings Restored / High Scores Reset" without any ability to start a game or enter test/audit. Rebooted and the "Short Row 1" message returns.
Not being the best with my tech skills, I'm wondering where the best place to start is to tackle the issue.
Thanks

Thanks for the reply.
I don't have the tools for testing voltage on hand but have access to one. I'll try to get my buddy to come by tomorrow.
As for right now, the LED1 bulb is lit although it is dimmer than the others on the board (not sure if that matters). I've attached a photo for what its worth.
Also attached a photo of the battery damage. Mostly crystallization on the battery that I wiped off the contacts on the board. Not sure what angles or areas are best to decipher corrosion damage.
Unfortunately I also don't have a F114 replacement fuse lying around. Are there any "non-startup-critical" fuses that I could swap in just to test it out? I'm not a pro but I'm guessing all the fuses probably need to be in place.
Any further help would be much appreciated!

IMG_1627 (resized).JPG

IMG_9688 (resized).JPG

This is the best I could do for a shot under the battery holder.
I'll give the F101 swap a try to see if there's any noticable change.

IMG_4604 (resized).JPG

Nope this is my one and only pin.
I'm not surprised there was some work done. I did get this machine from a guy who has a reputation for making some less than quality hacks to his machines.
That said, I have owned this machine for about 8 years and it has been running pretty consistently during that time.
Did the fuse swap with no noticeable differences.
Unless you've got any other ideas for me to try, for the time being we'll have to wait until I can get the voltages checked.