Search found 346 matches

by nintendo2600
Thu Mar 19, 2020 12:46 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

If you get me better pictures of the PCB - both sides, full PCB in view, no glare, as many traces visible as possible - I can probably draw a schematic for you. Some things I'm really not clear on. DE9 pin 7 should be TH, the photosensor output, but LM311 pin 4 is the negative voltage supply rail, ...
by nintendo2600
Wed Mar 18, 2020 10:27 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

That is 100 percent an inductor I've finally figured out. It's a 5.6 mH, ±10% inductor. Cool thing is you can add and divide inductors the same way you can with resistors. I mention that as it seems 5.6mh isn't a common unit from what I've gathered so far. That little transistor below it is actually...
by nintendo2600
Wed Mar 18, 2020 8:11 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

At the very least, the trigger should show up on a generic pad tester... Do you know that your GAMEGUN is specifically compatible with the Sega CD and not the 3DO? Since you disassembled yours, you could see what pin on the wires to the board connect to what pins on the DE9 connector on the other e...
by nintendo2600
Wed Mar 18, 2020 4:47 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

After running the test program I can report back that it doesn't detect the gun at all. After manually entering it as a justifier, menacer or gamegun it still registers nothing. I have my work cut out for me here it seems :(
by nintendo2600
Wed Mar 18, 2020 1:30 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

I mean, there's so little silicon there's not much that can go wrong. It's basically: 1- The phototransistor, which tentatively seems to be working 2- The next transistor, the small SOT23 near the inductor(?) 3- The LM311 Unfortunately, I'm not really certain how to go about testing these things wi...
by nintendo2600
Wed Mar 18, 2020 11:56 am
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

The photo transistor is kinda interesting how it's set up. The emitter and collector are attached but the base isn't attached to anything. That's typical for phototransistors. They're "real" transistors, with all three standard pins, but they're explicitly exposed to light instead of isolated. Phot...
by nintendo2600
Wed Mar 18, 2020 11:20 am
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

Usually green parts with such shape are inductors. Thanks for that info. Do you know where to buy them by chance? Ebay has nothing that matches. The photo transistor is kinda interesting how it's set up. The emitter and collector are attached but the base isn't attached to anything. My multimeter d...
by nintendo2600
Tue Mar 17, 2020 8:06 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

MRD310 should be something you could replace with any phototransistor of comparable specs, i.e. dark current around 5nA at room temperature - this is unusually low 3.5mA at 5mW/cm² 2870K blackbody 0.8mA at 0.5mw/cm² 940nm IR LED 2µs rise time 2.5µs fall time Vishay's VEMT2500 series looks comparabl...
by nintendo2600
Tue Mar 17, 2020 7:55 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

I'll see about the test with the multimeter tomorrow and report my finding then. Thanks for your help in this matter.
by nintendo2600
Tue Mar 17, 2020 7:50 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

I hope there is some equal to the MRD310 if that does turn out to be the problem. I've googled it and digikey doesn't have them while amazon and ebay want at least $30 for 1! Some guy is selling a pack of 10 for $99. I'm so used to getting them 5 for a dollar with replacing the photo diodes\resistor...
by nintendo2600
Tue Mar 17, 2020 7:40 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

Does your multimeter have a frequency test? If so, what does it say the frequency across the phototransistor is when you're pointing at a white screen? I'll have to check to see if it does. I've never used it to do something like that before but that is a pretty clever method of testing I have to s...
by nintendo2600
Tue Mar 17, 2020 7:32 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

I have a digital multimeter but that is about it.

EDIT: The color code is Silver(grey?)\red\blue\green\Silver.

The photo transistor is a motorola MRD310 with the 3rd leg removed.
by nintendo2600
Tue Mar 17, 2020 7:20 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Re: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

I'm starting to think the gun itself is not working. Are you familiar with the ALG gamegun at all? I've opened it up and I see a good amount of flux crust and possibly corrosion from the large resistor (or is this a color coded capasisitor?). LE 1 and 2 only register the trigger in menu, neither gam...
by nintendo2600
Tue Mar 17, 2020 5:12 pm
Forum: Other Retro Dev
Topic: Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?
Replies: 50
Views: 1356

Hardware test program for Genesis Justifier, Menacer and\or ALG GAMEGUN?

Hello, Does anyone here know of or have a test program to check the functionality of Sega Genesis lightguns? I've looked around quickly on google but didn't really find what I was looking for. Just something that can read what is or isn't working on a lightgun be it the Menacer or Justifier flavor. ...
by nintendo2600
Fri Jan 17, 2020 2:13 am
Forum: NESdev
Topic: Has Arkanoid II been hacked to use NES Vaus?
Replies: 33
Views: 24788

Re: Has Arkanoid II been hacked to use NES Vaus?

The Arkaonoid II hack (I verified the source CRC23 for the Japanese ROM I used matched what shows on romhacking) doesn't seem to load with the Everdrive-N8 even though the Chase H.Q. hack and the original Japanese ROM both work just fine. I'm using the latest Everdrive OS: http://krikzz.com/pub/sup...