SNK Neo Geo - 10 x Neo Geo MVS Board Repairs Part 5 MV-1FZ Repair - Cross Hatch & PCM Sound Issue

[@GadgetUK164]

There's an editing mistake there at the point I talk about the battery mod and latch-up. I could edit and re-upload, but it wouldn't be a GadgetUK164 video unless it had mistakes :o) There's a mistake at the end of the video there regards that resistor size too - orange as the first band would indicate a "3". I think it was 390ohm - doh!

[@NeonGenesisPlatinum]

NeonGenesisPlatinum7 seconds agoHi mate I was watching this video and when you got up to the Battery removal section I thought you may be interested in what we have been doing with them for a few years! Here is a link for you to a video of one of the guys I helped out.....I hope this helps you too. kzbin.info/www/bejne/noWzapKdiJhkitk

[@BoerboelBladeandAriaTV]

Hiya a just bought an mvs and one game wont work it comes up with a grid screen and blue outline????help would b appricated

[@gornway]

I checked my MV-2F board for a bad battery. never checked it before but it was leaking all over.... desoldered it and cleaned it all up. thank you GadgetUK164!

[@GadgetUK164]

=D

[@39Kohm]

I dip my unclogging spike for my desolding gun in my flux paste before cleaning out the nozzle, make it work much better. but I do still recommend that you put a bit of wire-wool in the collection tube as it helps immensely with cleaning it out. Keep up the good work :)

[@GadgetUK164]

Thanks =D Another useful tip! =D

[@tonanornottonull7132]

It's not GadgetUK without some NeoGeo work!

[@GadgetUK164]

=D

[@GameTechRefuge]

Great stuff Gadget. Your defiantly a black belt of the SNK hardware at this stage. Fingers crossed I get to dabble with some MVS hardware in 2019.

[@GadgetUK164]

Thanks lol =D

[@hypersonicfox]

BRAM VCC pin is connected to +5V through a diode. If you remove the battery, even if you remove the whole charging circuit, while you keep that diode, BRAM still has power when the board is powered. Also BRAM VCC pin is connected to the battery with another diode. This diodes allow BRAM to use battery power when +5V rail is below battery voltage while prevent battery to be connected stright to the +5V rail. The mod just removes the current limiter resistor that allows the battery to be charged.

[@GadgetUK164]

I thought it might do - I could have quickly checked at that point I guess on reflection!

[@geraldv203]

I think glue on cap is here to limit vibration, whitch can implies whining or any unwanted phenomenom. If a factory do this kind of thing you'll be certain that there is a reason for that. It can be ugly but a factory just want to do reliable and valuable thing, not make some art ^^ @GadgetUK164 For your Supergun, the problem is the location of the resistors, big connectors are too near them. You can use smaller resistors with the same power ratings and solder them horizontally. Sorry if my english is a bit rough ^^

[@Neffers_UK]

I wonder if someone had a cart that was mucky and decided that after cleaning it, it would be a good idea to add solder to some of the pads on the edge connector of the cart itself, left it and it gradually fatigued the fingers on the connector? Anyways, great couple of vids you managed to put out Gadge, your patience and persistence is way beyond others. Exceptional work mate.

[@GadgetUK164]

Thanks mate =D That's a good suggestion and you might be right with that theory!

[@KarlToona]

just a tip for removing adhesives. xylene (xylol) works wonders and wont damage plastics, paint, or clearcoat. i work in vehicle wrapping and we use it all the time to loosen the adhesive after a rough removal. just apply, let it sit for a minute or two, and scrap off with a plastic razorblade or your fingernail. Clean with ipa or denatured alcohol twice to remove all the solvent

[@GadgetUK164]

Thanks! Nice tip =D

[@Jayoldstuff1]

Well done for fixing a board with a hole drilled through it. looks like someone used a small ball mill to drill the old capacitor leg out, you can see the tell tail marks from the ball mill skimming on the solder resist on the top side of the PCB. least when i do it i use a very fine PCB drill.

[@GadgetUK164]

Thanks! I did wonder about that mark on the top side!!!

[@FernandoelChachi]

It will very nice to watch some Commodore stuff repair. BTW you know that I've got two Amiga boards expecting to become actresses in some video ;)

[@zxkim8136]

Nice series Chris well done on all the boards you have the patience of a saint mate 😁😁😁 Kim 😁😁😁

[@GadgetUK164]

Thanks Kim =D Patience has worn out lol

[@georgelea4297]

You've done awesome work on these machines keep up the amazing work

[@GadgetUK164]

Thanks =D

[@AdamSommer70]

Great video, I'm not bored of Neo-Geo :-)

[@GadgetUK164]

=D

[@phouleng]

I had The Same board .. its work great. LOVE Your Vids.

[@GadgetUK164]

Thanks =D

[@danielson9579]

Have you ever tried acetone to clean conectors ive repaired phones with it before but as a last ditch atempt.

[@GadgetUK164]

Never tried that! I migth give that a go - but I imagine it could be dangerous to use with certain plastics on sockets?

[@googleaccount3555]

I was curious if there's a reason why you're not using a gasoline product to remove the sticker glue? That always works really well for me, no issues with dissolving paints so far. Enjoying the series.

[@GadgetUK164]

Nice idea!!!!

[@Four_X]

Was that the wife's toothbrush you used in the video Chris. Ha. Top repair again bud.

[@GadgetUK164]

LOL! Thanks! =D

[@Septer_Sever]

Do you do this as a full time job? I certainly hope so, because this project has been enormous. You sure do deserve adequate compensation.

[@GadgetUK164]

Thanks =D I've not charged him anything for this work! I took it on out of my own interest at the end of the day, but Mike has offered me something amazing to say thanks! Hopefully I can share what it is later!

[@Septer_Sever]

@@GadgetUK164 Can't wait to see that! Helping out others is what the retro gaming community should be about and you are a fine example of that.

[@GadgetUK164]

Thanks, very much appreciated =D

[@123thewarrior]

Hey mate, I have the same motherboard and am running into sound issues and the occasional z80 error (using a 161 to test). Games will play the jingle on bootup however will go silent afterwards for the majority of gameplay but will occasionally play the jingle or other misplaced sound effects when i am doing specific things such as a special move or the results screen. Was just wondering if you could offer some tips on where on the mobo I could start to check for problems, cheers :)

[@GadgetUK164]

I would try testing with something other than the 161in 1 (ideally an original cart). There are a few things on the 161 in 1 that might cause issues - ie. a bad cart, or on the older 161 in 1 revision the PCB was too wide for the slot which meant it could make a bad connection sometimes - you had to shave the PCB edges down on the rev 1 161 in 1 boards. Beyond that I would start by looking for bad traces or solder points. Also try cleaning the cart slot and inspect the slots to make sure none of the pins are bent upwards (as in this video). Finally, you might have a faulty IC somewhere - the Neo-C1 and Neo-D0 have responsiblities for sound too. You could use the SMK Dan diagnostic BIOS like I do to try and diagnose the fault further.

[@LAGUNAMAN1972]

i have the same desolder gun has you dose the nozzle move about side to side on yours

[@GadgetUK164]

Mine doesn't move side to side! Is your tip tightened up properly?

[@LAGUNAMAN1972]

it looks like the 2 or 3 screws are tight

[@GadgetUK164]

Yes, those replacement feet and screws aren't great! A bit of 3 in 1 can help with things like that.

[@goglu2]

just stick it in the slot a good 10 - 15 times ;)

[@GadgetUK164]

=D

[@michaellowery1559]

Pain when you damage a pcb but sometimes it can't be helped! Good job Chris!

[@GadgetUK164]

Thanks =D Yeah, I hate damaging a PCB, but sometimes it's easy when removing SMD chips a number of times =/

[@NeonGenesisPlatinum]

Hi mate I was watching this video and when you got up to the Battery removal section I thought you may be interested in what we have been doing with them for a few years! Here is a link for you to a video of one of the guys I helped out.....I hope this helps you too. kzbin.info/www/bejne/noWzapKdiJhkitk

[@StRoRo]

if I see one fucking more tik tok fucking advert!!!!!!!! it's not you it seems nearly every video has them. so let's get this straight, the one with deep cuts, broken pins and been drilled was the easiest to do?

[@GadgetUK164]

LOL!!!!! Haha, yes - despite the work involved on this one it was easy compared to the others!