Sega Naomi universal monitor issue
- Thread starter Rob_bob_2k6
- Start date
Rob_bob_2k6
Active member
It does have an effect, since turning it anti clockwise the screen maintains those lines rather than fading.
When first turning it on it would keep the lines on screen for a few seconds then fade.
Was shown a video of it working through what’s app, then Martin has had it for 2 weeks now delivered with no picture, so not sure what could have happened to it.
When first turning it on it would keep the lines on screen for a few seconds then fade.
Was shown a video of it working through what’s app, then Martin has had it for 2 weeks now delivered with no picture, so not sure what could have happened to it.
The ribbon cable with the grey cables and a couple of green and a red one, that is the cable for the renote adjustment board that is inside the control panel, I would check that is all plugged in and secure at both ends, you could also try adjusting the pots on the remote board and see if that causes any changes on the screen.
You will need to remote the front monitor surround to access the cable plugged into the remote adjustment board from memory.
You will need to remote the front monitor surround to access the cable plugged into the remote adjustment board from memory.
Rob_bob_2k6
Active member
The controls on the front panel do adjust picture size etc, but none of them make the game show.
Cheers
Cheers
Rob_bob_2k6
Active member
Is that fixable?
Rob_bob_2k6
Active member
Jinq-only maybe 20-30mins after bringing it in.
Gunblade- I do have a multimeter here but wouldn’t really know what to do to be honest.
Gunblade- I do have a multimeter here but wouldn’t really know what to do to be honest.
just looked at the schems and the issue is more likely to be r517 3r3 ohm 1w metal oxide, it's actually on the heater circuit rather than video b+
if you feel the need to check that resistor with your meter then DO NOT have the chassis powered
if you feel the need to check that resistor with your meter then DO NOT have the chassis powered
Rob_bob_2k6
Active member
…Rob_bob_2k62021-09-09 19:49:42
Rob_bob_2k6
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Update:
thegreathopper
Active member
Well done on the repair, what was the fault?
Rob_bob_2k6
Active member
Had to send the chassis off for repair. Was the victim of a bodged repair so didn’t survive transit. A bad job had been made of replacing a capacitor on the Board and caused damage. Also had a snapped neck card which had been bodged. New neck card and new capacitor and now up and running.
Par for the course in this game, ops done anything they could to keep the games running, can't count the amount of ms8/9 chassis I've seen with jumper wires and bodge jobs on them, least you have it sorted should last a long time (or maybe not as is the nature of these thing unfortunately)
Have you got some pictures of the snapped neck card, looks ok if the previous pictures you had posted?
Would be interested to see as heard of some dodgy repairs before on neckcards on the Broken Token Podcast.
Fantazia22021-09-15 10:24:32
Would be interested to see as heard of some dodgy repairs before on neckcards on the Broken Token Podcast.
Fantazia22021-09-15 10:24:32
Rob_bob_2k6
Active member
Nope, it was replaced and I haven’t seen a photo of the old one. I do trust what I was told though.
Ahh yeah I can see at least a crack in the neckboard in the previous pictures now you mention it. I guess this is the way with these things, they all will have many repairs and hoiking them about means any of then could give at any moment. Hell I've got two cabs that were working, I haven't moved them an inch and now they aren't.
tin said:
Now you say that I can see it, missed there was another photo earlier in the thread of the neckboard from the side and can see the damage on that, and using that can see a bit on the other photo by a matching up where the damage is.
