Here's my dilemma..... have a super neo 29 and have never had an issue with it at all...just got fast strikers and last hope today and wanted to test em out....I know these ngdev games can be a pain in the slots so I tried one at a time with all the other slots empty.... fast strikers worked fine. However, when I tried Last Hope I got nothing and I swear I heard a pop noise from inside the cab... the screen is just blank now and even when I try regular carts I get nothing... could last hope screwed up my cab or monitor... not sure what to do now so any advice would be appreciated
Need help asap!!!!
- Thread starter boss0033
- Start date
Tyranix95
Chang's Grocer
- Joined
- Jun 30, 2010
- Posts
- 4,593
If you heard a "PoPing" noise, then (get a multi-meter and continuity/diode) check your fuses. See if you blew a fuse.
Iirc, there should be one in, on, or around the PSU. And, one on the chassis (monitor board).
If the cab play's bind, then start with the chassis. If the cab does NOT play blind, then start with the PSU.
Iirc, there should be one in, on, or around the PSU. And, one on the chassis (monitor board).
If the cab play's bind, then start with the chassis. If the cab does NOT play blind, then start with the PSU.
Tyranix95
Chang's Grocer
- Joined
- Jun 30, 2010
- Posts
- 4,593
Basically, you're looking for a blown fuse, or a bad/deformed fuse.
The m-m will tell you if the fuse can carry current. It's a rough check. If the fuse is blown, then the meter will not "buzz." But, some bad/deformed fuses (with blisters on the filliment) will buzz but still be bad. So eyeball it, and use your better judgement.
btw, when you check the fuse, make sure the power is off, remove it from the holder, and then check it. You may need a little screwdriver to remove it from the holder.
And if you take both fuses out at the same time, don't forget which one goes where. Write it down. And take pictures. You don't want to put the wrong fuse back in the wrong holder.
The m-m will tell you if the fuse can carry current. It's a rough check. If the fuse is blown, then the meter will not "buzz." But, some bad/deformed fuses (with blisters on the filliment) will buzz but still be bad. So eyeball it, and use your better judgement.
btw, when you check the fuse, make sure the power is off, remove it from the holder, and then check it. You may need a little screwdriver to remove it from the holder.
And if you take both fuses out at the same time, don't forget which one goes where. Write it down. And take pictures. You don't want to put the wrong fuse back in the wrong holder.
Lemony Vengeance
Mitt Romney's Hairdresser,
- Joined
- Jan 30, 2012
- Posts
- 4,204
Tyranix speaks the gospel truth.
- Joined
- Dec 1, 2005
- Posts
- 27,750
Is that with a board connected?
Its the factory one...there's another thread here that shows a pic of it under super neo 29 dead monitor... the fuse is on the front of the psu. I unscrewed it and it looks OK but who knows. Can a game ruin the PSU of was it just a coincidence I tried running last hope?
- Joined
- Dec 1, 2005
- Posts
- 27,750
I don't know what that means. I usually use the continuity check.
What's that??? Never tested a fuse before... pretty much set my mm to 200 ohm and placed the leads on each end of the fuse and that's the reading a got which based on what online sites say its a good fuse. I'm not sure how to do any other test
Lemony Vengeance
Mitt Romney's Hairdresser,
- Joined
- Jan 30, 2012
- Posts
- 4,204
switch your MM to this symbol
if the display moves to 0 you have continuity. if it doesn't, that fuse is POPPED!
Tyranix95
Chang's Grocer
- Joined
- Jun 30, 2010
- Posts
- 4,593
The lowest setting ohms test basically does the same thing as the Diode/Continuity test, and it is more accurate.
---
Those +5v power readings are not good. These indicate that your PSU is bad.
I'm thinking you had a power surge and it took out the PSU.
Sometimes a cab suffers a surge and the fuse does not blow.
---
Found a manual for a Super Neo '29.
http://wiki.arcadeotaku.com/images/9/9c/SNK_Super_Neo_29_Candy_Manual.pdf
Looks like it has the same PSU as a Neo/Candy 29?
---
Those +5v power readings are not good. These indicate that your PSU is bad.
I'm thinking you had a power surge and it took out the PSU.
Sometimes a cab suffers a surge and the fuse does not blow.
---
Found a manual for a Super Neo '29.
http://wiki.arcadeotaku.com/images/9/9c/SNK_Super_Neo_29_Candy_Manual.pdf
Looks like it has the same PSU as a Neo/Candy 29?
Last edited:
- Joined
- Apr 28, 2012
- Posts
- 466
If you need help let me know.pm me
Tyranix95
Chang's Grocer
- Joined
- Jun 30, 2010
- Posts
- 4,593
Basically what I'm saying, in plain English, is that there is no way in hell that an arcade PCB can start up with a power supply that puts out +0.45v on the +5v line.
In order for a PCB to even have a chance of starting up, the power supply has to put out least, about, +4.85v on the +5v line.
So, what I'm saying, imho, is, i think you need to test your cab out with another power supply. One that is known to work good. And see what happens next. See if the cab starts working again with the known good power supply in it. And if it does, then consider replacing the bad one.
And pick a power supply with either the same specs, or better, as your current power supply. Don't down grade.
In order for a PCB to even have a chance of starting up, the power supply has to put out least, about, +4.85v on the +5v line.
So, what I'm saying, imho, is, i think you need to test your cab out with another power supply. One that is known to work good. And see what happens next. See if the cab starts working again with the known good power supply in it. And if it does, then consider replacing the bad one.
And pick a power supply with either the same specs, or better, as your current power supply. Don't down grade.
Last edited: