https://www.gamesdatabase.org/Media/SYSTEM/Arcade//Manual/formated/Knuckle_Heads_-_1992_-_Namco.pdfDoes anyone have a scanned manual from any of the NA1 and NA2 games ?
Very nice! Can you confirm that the chip is a B-21? I see 2 pins tied to Vcc, right? Which pins are those?I assume that they are modified to work without battery? Basically the pins 43 & 44 (IIRC) are tied to Vcc.Oh, yes - also got two c boards from sheep_nova!
I think HPvol is headphone VOL but don't quote me on thatOK, so I replaced all the SMD caps on this and still have no audio. I get an increased hum when I touch the audio amp pins underneath, so I think that can be ruled out for now. Are there any other chips to take a closer look at that may be tied to the sound in some way, or any specific caps that are more important to the sound than others? How about all those mega tiny transistors? that are everywhere within the sound section? When I got the pcb, the audio was very low, but there. How about those volume wheels- what is the difference between the 2- SPVOL and HPVOL? Got my Multi in the mail today- looks great, thanks Hammy!
Will have a look later at home!Very nice! Can you confirm that the chip is a B-21? I see 2 pins tied to Vcc, right? Which pins are those?I assume that they are modified to work without battery? Basically the pins 43 & 44 (IIRC) are tied to Vcc.
Took off the red stickers and yes they are B-21 Chips - the two pins solered to the wire are 45/46Very nice! Can you confirm that the chip is a B-21? I see 2 pins tied to Vcc, right? Which pins are those?I assume that they are modified to work without battery? Basically the pins 43 & 44 (IIRC) are tied to Vcc.
Instead of fighting over them with each other, maybe someone calls them so they don't go mad?guys , if you feel confident with repairing this system ... i think this auction can be a good chance :
- https://page.auctions.yahoo.co.jp/jp/auction/n439252844
also , this board was reccaped and the board is in working condition :
- https://page.auctions.yahoo.co.jp/jp/auction/s752569475
I'll try to request it again. Maybe it's porn@Hammy Can we get the rom files meanwhile? Since it will took probably 2 hours to burn them all XD i would like to be prepared already for that