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Foot
23rd June 2006, 08:09 PM
Ah crap, I've got a Mr. Du! (yes Du, not Do or Doh) and he's vanished from the game, along with a few other characters

If you can make out the snap (yes the screen needs degassing I think) you can see only one baddy, but Mr Du is there somewhere along with another baddy. The apples above the cherries aren't there either.

1136

I remember reading of this happening in other games but can't remember where or what the fault was.

Any Ideas?? :unsure

Foot

MadMikeAU
23rd June 2006, 08:17 PM
Yep. Degauss that sucker....wont bring ya sprites back, though.

Johns-Arcade
23rd June 2006, 08:28 PM
First thing, try re-seating your EPROMS.

Regards,

JWG

Foot
23rd June 2006, 09:17 PM
[QUOTE=JWG]First thing, try re-seating your EPROMS.

Is this the technical term for pulling them out cleaning them and putting em back in?

Now where did I put that deguassing wand... That's right I don't have one yet AGHHHHHH!!!

Foot

Johns-Arcade
23rd June 2006, 09:33 PM
Yes that right, sorry about that :-)

JWG

The Pinny Parlour
23rd June 2006, 09:47 PM
LMAO :lol

Foot
24th June 2006, 08:14 PM
First thing, try re-seating your EPROMS.

I cleaned and re-seated everything and nothings changed. Would the fault indicate that one of them is shagged or something completely different?

Foot

MadMikeAU
24th June 2006, 08:42 PM
I cleaned and re-seated everything and nothings changed. Would the fault indicate that one of them is shagged or something completely different?

Foot

Either or both.

It could be a sprite RAM issue...or the writes arent getting to the RAM...or the RAM info isnt getting to the color prom...or the color prom is shagged...or...

Foot
26th June 2006, 10:52 PM
Ok, I've run the self check on the game and it comes up clean. What maybe a possible cause for missing sprites is the following J306X chips look pretty ordinary and they seem to have something to do with sprite generation.

1180

Numbers on the chip are J306X TBP 185030N. There is a bit of corrosion on the pins and one appears to be soldered.

Two other similar ones are in the same condition. These appear to have something to do with contrast/ brightness of the display?

1181

Very blurry, numbers are MB 7051 6251 C44

Are replacements available for these chips? and if so where could I track them down?

Foot

MadMikeAU
27th June 2006, 12:39 AM
OK.

T2 and U2 are both 74S288 (off the schematic) these are indeed equal to the MB7051. These are the color proms.

E10 is also a 74S288. It looks to be doing something with color (possibly for the character set aka playfield). Looking at your pic, the leftmost solder on RA3 looks dodgy. Judging by the thicker trace leading to it, I'd say that pin is 'common' and a bad solder there would cause the whole array to not work.

Foot
27th June 2006, 08:25 AM
I'll check that RA3 connection tonight.

I'm still trying to find a supplier for the other chips to replace them.(ideas?)

And, Should any chips anywhere one the board run warm/ hot? if so, what's and acceptable temp range, if not what's a likely cause?

Foot

humpalot
27th June 2006, 08:40 AM
The chips that you are referring to are all proms and yes they normally run hotter than other IC's. They are prone to carbon build up and corrosion, you should remove them from their sockets and clean the legs. But be very careful because the legs will be weak, I normally use either a scotchbrite pad or fine sandpaper to clean them. Make sure if you remove them that you put them back into the same socket that you removed them from as they have code programmed into them and won't work in other positions or on other games.

If you need a replacement try http://www.mikesarcade.com/cgi-bin/store.pl?action=search&category=Components&subcategory=PROMs

Foot
28th June 2006, 12:34 PM
I rechecked all the soldering on the board and touched up a couple of areas. Didn't change anything. :(

Re the PROMs: I'm not too keen on removing these suckers as I can see that they may have already had broken legs previously and they have been resoldered. Hence the search for replacements. I have emailed mikes arcade and am waiting a response.

On the degaussing issue... Last night I was tiding the wiring up in the cab and thought things would be much tidier if the monitor was rotated 180. This would also allow me to alter the colour pots if needed (they were facing the back of the cab)

So I rotated it and replugged the monitor to alter the orientation and what do you know!! Colours are now all mickey duck!!! :D

Just goes to show you never can tell what will fix these issues

Foot

Foot
29th June 2006, 05:57 PM
Below is the reply I got from Mikes Arcade:

Hello,

We can do it if you have the code dumps of those chips. I don't have them on hand. You'd need to order:

4 PROM82S123 chips with programming. Then send us the images named as you'd like them labeled.

Best,

- Mike -

Ok, my question (even if it's silly) is where would I get the code dumps from?

Foot

Davefjedi
29th June 2006, 06:56 PM
could you get them from a mame rom ????

MadMikeAU
29th June 2006, 06:59 PM
Dont really know of any place you could download them as that may/may not be illegal . Hmmm, let me think...nope fresh out of ideas. (http://romhustler.net/rom/mame/2711)
;) ;) ;) ;) ;) ;) ;) ;) ;) ;) ;) ;) ;) ;) ;)

The Pinny Parlour
29th June 2006, 07:35 PM
Dont really know of any place you could download them as that may/may not be illegal . Hmmm, let me think...nope fresh out of ideas. (http://romhustler.net/rom/mame/2711)
;) ;) ;) ;) ;) ;) ;) ;) ;) ;) ;)

http://webhollis.com/albums/Funny-Forum/Ray_Can_t_See_Shit.jpg

Foot
29th June 2006, 07:45 PM
I told you it was a silly question!

Keep this up and I will have to taunt you.... what the hell, I will anyway

I don't wanna talk to you no more, you empty headed animal food trough wiper! I fart in your general direction! You mother was a hamster and your father smelt of elderberries!

The Pinny Parlour
29th June 2006, 08:33 PM
I don't wanna talk to you no more, you empty headed animal food trough wiper! I fart in your general direction! You mother was a hamster and your father smelt of elderberries!
mmmmmm elderberries :lol

Foot
29th June 2006, 09:10 PM
Ok, look, Although I may very well get hammered I'm going to have another crack at this.

Let's pretend I know jack shit about this (stop it...)

If, for arguments sake I had the MAME Rom for Mr. Du!, which wouldn't be illegal since I've got the PCB(?), how would I go about getting the code for each of the chips I require from the rom as requested by 'Mike'? :unsure

Please don't make me taunt you again like this......

"How you English say, 'I one more time, mac, unclog my nose in your direction', sons of a window-dresser! So, you think you could out-clever us French folk with your silly knees-bent running about advancing behavior?! I wave my private parts at your aunties, you cheesy lot of second hand electric donkey-bottom biters."

I thank you in advance for your sincere response

Foot

The Pinny Parlour
29th June 2006, 09:13 PM
Ok, look, Although I may very well get hammered I'm going to have another crack at this.

Let's pretend I know jack shit about this (stop it...)

If, for arguments sake I had the MAME Rom for Mr. Du!, which wouldn't be illegal since I've got the PCB(?), how would I go about getting the code for each of the chips I require from the rom as requested by 'Mike'? :unsure

Please don't make me taunt you again like this......

"How you English say, 'I one more time, mac, unclog my nose in your direction', sons of a window-dresser! So, you think you could out-clever us French folk with your silly knees-bent running about advancing behavior?! I wave my private parts at your aunties, you cheesy lot of second hand electric donkey-bottom biters."

I thank you in advance for your sincere response

Foot


ok download the romSET, then extract the zip and each eprom is represented in the zip.

Now I was having a lend of Mike not you. :)

MadMikeAU
29th June 2006, 09:15 PM
< sincere responce >
You all can bite me
< /sincere responce >

The Pinny Parlour
29th June 2006, 09:24 PM
< sincere responce >
You all can bite me
< /sincere responce >
http://webhollis.com/albums/Funny-Forum/Want_A_Cookie.jpg

Johns-Arcade
29th June 2006, 09:30 PM
Below is the reply I got from Mikes Arcade:

Hello,

We can do it if you have the code dumps of those chips. I don't have them on hand. You'd need to order:

4 PROM82S123 chips with programming. Then send us the images named as you'd like them labeled.

Best,

- Mike -

Ok, my question (even if it's silly) is where would I get the code dumps from?

Foot

Foot, if you want you can send me your proms and I'll test them for you to see if they are ok. I do have a very limited supply of blank proms, so I can program you a new set if needed. Unfortunately, these proms are now obsolete and are hard to find and expensive.

Regards,

JWG.

The Pinny Parlour
29th June 2006, 09:35 PM
ah darn...sorry Foot. I just re-read your post. You said proms not eproms. (opps) I do think that the prom codes are in the romsets though.

MadMikeAU
30th June 2006, 12:46 AM
Yep. The link I gave before has these files...

d1 8192 3dcd9359 mrdu
d2 8192 710058d8 mrdu
d3 8192 467d12d8 mrdu
du4.bin 8192 893bc218 mrdu
du9.bin 4096 4090dcdc mrdu
du10.bin 4096 1e63ab69 mrdu
r8-08.bin 4096 dbdc9ffa mrdo
n8-07.bin 4096 4b9973db mrdo
h5-05.bin 4096 e1218cc5 mrdo
k5-06.bin 4096 b1f68b04 mrdo
u02--2.bin 32 238a65d7 mrdo
t02--3.bin 32 ae263dc0 mrdo
f10--1.bin 32 16ee4ca2 mrdo
j10--4.bin 32 ff7fe284 mrdo

The 32 byte ones are the proms...and if isnt painfully obvious, the names tell you the positions.
========================
EDIT

Sorry, just noticed that the proms are in the parent set Mr Do, available here...http://romhustler.net/download/mame/2706

humpalot
30th June 2006, 07:21 AM
Unfortunately, these proms are now obsolete and are hard to find and expensive.

Regards,

JWG.

Expensive yes, hard to find no. I get my proms from http://www.mikesarcade.com/cgi-bin/store.pl?action=search&category=Components&subcategory=PROMs
or if you have new style programmer have a look here http://www.aussiearcade.com/showthread.php?t=1585

MadMikeAU
30th June 2006, 10:43 AM
http://www.mikesarcade.com/cgi-bin/store.pl?sku=PROM82S123

I just confirmed is pin compatible with the 74S288...and $5 a piece is not THAT bad, considering the state of your current proms.

Foot
30th June 2006, 03:10 PM
Thanks for the information about the prom types, compatablitlity, code location etc. It's all been helpfull.


JWG, I might take you up on your offer, I'll PM you to get some more details, etc

Foot

"I think that all good, right thinking people in this country are sick and tired of being told that all good, right thinking people in this country are fed up with being told that all good, right thinking people in this country are fed up with being sick and tired. I'm certainly not, and I'm sick and tired of being told that I am..."Anon

Johns-Arcade
30th June 2006, 04:32 PM
Expensive yes, hard to find no. I get my proms from http://www.mikesarcade.com/cgi-bin/store.pl?action=search&category=Components&subcategory=PROMs
or if you have new style programmer have a look here http://www.aussiearcade.com/showthread.php?t=1585

Locally I mean. I know you can get these in the USA without too many problems, but here in Australia it's a different story.

JWG.

humpalot
30th June 2006, 04:54 PM
Locally I mean. I know you can get these in the USA without too many problems, but here in Australia it's a different story.

JWG.

Ands that's why I buy all my electronic parts from O/S, plus it works out cheaper.

Johns-Arcade
30th June 2006, 05:27 PM
Ands that's why I buy all my electronic parts from O/S, plus it works out cheaper.

That makes two of us, but it's only cheaper if you buy in bulk. Add shipping, insurance, and the exchange rate, and one offs are far too expensive to buy overseas.

The last lot of proms I bought from the USA was when the Aussie dollar was around 50 cents, so this wasn't a very cheap exercise and even at 73 cents it's still not cheap IMHO.

Regards,

JWG.

Foot
26th January 2008, 10:37 PM
Sooooo, this board was shitting me just sitting on the shelf. Seeing that AK had fixed his Mr Do inspired me (well, whatever) so I bought a cheap non working Du board of ebay to try and salvage parts to get the sucker going.

Well that was a waste of time as the eproms and shit I wanted were as ****ed as mine. :x

Anyway I got some eproms off ebay from a dude in Bulgaria :o

(At this point I ceased to have much input into fixing the pcb).

Went around to AK's where he fixed up the eproms and reprogrammed 2 roms so the pcb is now Mr Do not Du.

The Invisible Mr Do issue was fixed (from memory) by replacing a 74LS244 at B7 on the board.

AK also identified that this board was only running one sound chip (SN76489N) so was only playing half the sounds. Looks like it was made this way.

Note: This repair was sponsored by "The Backyarders Board Repair Technical Institute" Thanks AK