Nevus
Member
I have an STTNG problem that I can't seem to lick.
I have been restoring it for a few months. I've rebuilt cannons, replaced plastics, added lasers, replaced small optos etc. I was building confidence. The game worked and played. Most, if not all problems were rust, switches and playfiled parts. Attempting to diagnose a non-working flasher, It happened.
The right side flasher next to Klingon target bank was out. I wasn't sure where the bulb was. I put it in test mode. Opened the door. Lifted the playfield. Removed the live bayonet with a non working bulb. I couldn't get the bulb out. So I pulled out the bayonet and touched it to the Klingon 3 target bank. There were some sparks. I said oops. I had no idea this was very very bad.
I turned off the game and replaced the bad bayonet and bulb (old one was rusted). Turn on game and get "fuse 114 and 115 out". Fuse 114 was not out. Fuse 115 was out. 3/4 amp slo-blow. Replace fuse and get "Ground short Row 1" Consensus from forums was that I have damaged my CPU board ULN2803. Sent it for repair by Chris Hibler. After installing, game does not work. It boots and a series of really bizarre things happen. Chris was very helpful taking me through some diagnostics.
The Game Boots and
DMD says "Testing 50023 REV LX-7", "Press enter for test report". then goes to picture of enterprise and title screen. Cannons continue to look for home and coils fire. Opening the coin door, the buttons do not work in a normal way. The right button labeled enter or test does not work. Volume buttons do not work. The escape or service credit buttons work. The game is stuck on maximum volume and will only reset if I remove the batteries. After removing them, the game will boot and eventually the volume will increase to maximum as if the button is continuously pressed.
Left and right flipper buttons act as coin door buttons.
The flashing start button does not respond
Continue button does not respond.
I cant get to the test menu so I assume I have melted something together that shouldn't be.
After trying a bunch of tests, the coin door buttons appear to be in continuity with the molex connectors that attach them to the CPU board. I send off the following boards, Fliptronics, 8 driver, multi-opto (beneath playfield) and the DMD board (wasn't suspect but because it looked cooked). After evaluation, they all appear to be fine.
So, I now have my boards back and am stuck. I would really appreciate advice at this point and would gain great satisfaction from solving this with said assistance.
Although not related to the incident, I made several repairs after my electrical mis-hap that I had planned to do. I include this in case it helps. I replaced the 7 opto boards in the trough, rebuilt all 3 flippers with kits from marcospec, repaired a few bad lamp sockets on the large lamp board beneath the Enterprise on the lower playfield.
Thanks everyone,
Chris
I have been restoring it for a few months. I've rebuilt cannons, replaced plastics, added lasers, replaced small optos etc. I was building confidence. The game worked and played. Most, if not all problems were rust, switches and playfiled parts. Attempting to diagnose a non-working flasher, It happened.
The right side flasher next to Klingon target bank was out. I wasn't sure where the bulb was. I put it in test mode. Opened the door. Lifted the playfield. Removed the live bayonet with a non working bulb. I couldn't get the bulb out. So I pulled out the bayonet and touched it to the Klingon 3 target bank. There were some sparks. I said oops. I had no idea this was very very bad.
I turned off the game and replaced the bad bayonet and bulb (old one was rusted). Turn on game and get "fuse 114 and 115 out". Fuse 114 was not out. Fuse 115 was out. 3/4 amp slo-blow. Replace fuse and get "Ground short Row 1" Consensus from forums was that I have damaged my CPU board ULN2803. Sent it for repair by Chris Hibler. After installing, game does not work. It boots and a series of really bizarre things happen. Chris was very helpful taking me through some diagnostics.
The Game Boots and
DMD says "Testing 50023 REV LX-7", "Press enter for test report". then goes to picture of enterprise and title screen. Cannons continue to look for home and coils fire. Opening the coin door, the buttons do not work in a normal way. The right button labeled enter or test does not work. Volume buttons do not work. The escape or service credit buttons work. The game is stuck on maximum volume and will only reset if I remove the batteries. After removing them, the game will boot and eventually the volume will increase to maximum as if the button is continuously pressed.
Left and right flipper buttons act as coin door buttons.
The flashing start button does not respond
Continue button does not respond.
I cant get to the test menu so I assume I have melted something together that shouldn't be.
After trying a bunch of tests, the coin door buttons appear to be in continuity with the molex connectors that attach them to the CPU board. I send off the following boards, Fliptronics, 8 driver, multi-opto (beneath playfield) and the DMD board (wasn't suspect but because it looked cooked). After evaluation, they all appear to be fine.
So, I now have my boards back and am stuck. I would really appreciate advice at this point and would gain great satisfaction from solving this with said assistance.
Although not related to the incident, I made several repairs after my electrical mis-hap that I had planned to do. I include this in case it helps. I replaced the 7 opto boards in the trough, rebuilt all 3 flippers with kits from marcospec, repaired a few bad lamp sockets on the large lamp board beneath the Enterprise on the lower playfield.
Thanks everyone,
Chris
