Search found 51 matches

by kobayuz777
August 28th, 2019, 4:08 am
Forum: Game Hardware Q&A
Topic: cps2 Qsound ram error
Replies: 12
Views: 720

Re: cps2 Qsound ram error

Z80 clock comes from the 8Mhz oscillator box near it. So, likely oscillator box could be faulty. Z80 being dead (no clock) could cause QSOUND error. Z80 being missing or stalled could also cause blank screen if game tries to access QSOUND memory area and 68000 does not receive DTACK signal from rea...
by kobayuz777
August 15th, 2019, 6:39 am
Forum: Game Hardware Q&A
Topic: cps2 Qsound ram error
Replies: 12
Views: 720

Re: cps2 Qsound ram error

Probably your fault will be the PAL plus one of the TTL logic chips around it. Purchase a GAL16V8 IC and program it with the correct file from this site: https://www.jammarcade.net/wiki/index.php?title=CAPCOM_CPS2 https://page.auctions.yahoo.co.jp/jp/auction/f361705728 thank you for the advice! :D ...
by kobayuz777
August 7th, 2019, 5:57 pm
Forum: Game Hardware Q&A
Topic: cps2 Qsound ram error
Replies: 12
Views: 720

Re: cps2 Qsound ram error

Can you try BGSA3 and BGSA4 PALs on other CPS2 board? Early ones have socket, is easy to test. https://yahoo.jp/box/SbPT2K https://yahoo.jp/box/rk9bxQ https://yahoo.jp/box/0FYz7H I tried replacing the PAL of a normal A board (with socket). :awe: There was a new discovery. Even when I attached the F...
by kobayuz777
August 3rd, 2019, 8:23 am
Forum: Game Hardware Q&A
Topic: cps2 Qsound ram error
Replies: 12
Views: 720

Re: cps2 Qsound ram error

Try replacing Z80 RAM (28 pin SMD IC at position 2K) standard 6264 SRAM IC. The clock for the Philips DAC IC comes from the QSOUND DSP, not related to Z80 clock. https://yahoo.jp/box/Q1j6Fo I forgot to say I tried replacing the Z80 RAM first. I thought it was the closest to the cause because it is ...
by kobayuz777
August 2nd, 2019, 4:01 am
Forum: Game Hardware Q&A
Topic: cps2 Qsound ram error
Replies: 12
Views: 720

Re: cps2 Qsound ram error

I was busy with work and didn't have time to check the board. :awe: Since I wanted to repair, I started again recently. I will write down here in hopes that the information on CPS2 will be abundant. As general-purpose IC was sold to shop, we purchased. I removed it with a heat gun and replaced it wi...
by kobayuz777
March 26th, 2019, 6:42 am
Forum: Game Hardware Q&A
Topic: cps2 Qsound ram error
Replies: 12
Views: 720

Re: cps2 Qsound ram error

leonardoliveira wrote:
March 25th, 2019, 5:02 pm
This is what the things on your picture are.


Mr.leonardo
Thank you always for the correct advice!
Let's check the pointed out part. :awe:
by kobayuz777
March 23rd, 2019, 8:13 am
Forum: Game Hardware Q&A
Topic: cps2 Qsound ram error
Replies: 12
Views: 720

cps2 Qsound ram error

I want people with knowledge to tell me. :awe: The other day I bought a junk board. There was no case, it was a set of A + B, but it was the one to see for the first time about a pin. https://yahoo.jp/box/X0_Y6Z https://yahoo.jp/box/rXBHDR https://yahoo.jp/box/13lvJh https://yahoo.jp/box/rYXE18 A bo...
by kobayuz777
January 25th, 2019, 9:02 am
Forum: Game Hardware Q&A
Topic: The custom of Magic Sword CPS1
Replies: 3
Views: 372

Re: The custom of Magic Sword CPS1

SFII World Warrior Japan has CPS-B-13 PPU https://wiki.arcadeotaku.com/w/CPS1 (list of PPUs and games) CPS-B-21 PPU has capability of being operated with battery (can be programmed to be any type of PPU) but is equivalent to B-01 in no battery mode. To change which PPU one game needs, require game ...
by kobayuz777
January 23rd, 2019, 3:01 pm
Forum: Game Hardware Q&A
Topic: The custom of Magic Sword CPS1
Replies: 3
Views: 372

The custom of Magic Sword CPS1

https://yahoo.jp/box/c1e3Tk https://yahoo.jp/box/rUGR5Q https://yahoo.jp/box/-zZuFx It is a question. :awe: I bought a strange Magic Sword (CPS 1) with color. In order to investigate the cause, Street fighter 2 (World Warrior) C board and I replaced it and the color was fixed! I thought that custom...
by kobayuz777
December 22nd, 2018, 11:55 am
Forum: Game Hardware Q&A
Topic: cps2 HYPER STREET FIGHTER 2 ROM capacity
Replies: 1
Views: 291

cps2 HYPER STREET FIGHTER 2 ROM capacity

https://yahoo.jp/box/4wZZM8 Please tell me if you know. :) I would like to convert to "HYPER STREET FIGHTER 2" using the board of revision 7, GFX ROM and Q sound rom has 8 mega. 11, 13, 15,17,19 exist. 12, 14, 16, 18, 20 do not exist. What is the model number of the UVEPROM that corresponds to the ...
by kobayuz777
December 22nd, 2018, 11:13 am
Forum: Game Hardware Q&A
Topic: cps2 gfx sprite issue
Replies: 10
Views: 1098

Re: cps2 gfx sprite issue

Yet another post hijacker here, sorry in advance. Own some CPS2 A+B boards with issues, an X-Men COTA with RAM ERROR (on red screen), other Street Fighter Zero 2 Alpha (LA) with RAM NG ERROR, both of them with a "good looking PCB", in the other hand bought an "acid splitted" Marvel Vs Capcom which ...
by kobayuz777
November 6th, 2018, 1:13 pm
Forum: Game Hardware Q&A
Topic: cps2 gfx sprite issue
Replies: 10
Views: 1098

Re: cps2 gfx sprite issue

Sorry for thread jacking , but is this the same issue you had? I pressed down on all customs and nothing changes. Also the PAL chips are hot https://streamable.com/v8za2 Noise is first heard in the sound. Is this a sound other than games? :awe: https://yahoo.jp/box/UaBb8F I think that there are man...
by kobayuz777
November 5th, 2018, 2:09 am
Forum: Game Hardware Q&A
Topic: cps2 Screen does not appear
Replies: 15
Views: 1314

Re: cps2 Screen does not appear

Uhh...how many boards you got there? :awe: Nice job on the fix! :thumbupright: :) :thumbup: https://klovimg.com/images/2018/10/22/Untitled.png Asure, if touching the DL-1927 corrects the problem, then it's likely cold solder joints at that chip. Try reflowing that chip first, as that may be all tha...
by kobayuz777
November 5th, 2018, 1:49 am
Forum: Game Hardware Q&A
Topic: cps2 gfx sprite issue
Replies: 10
Views: 1098

Re: cps2 gfx sprite issue

I will look at DL2027 well. It seemed that around 91 to 120 pins were floating. It seems I did not properly wear solder. :problem: https://yahoo.jp/box/_SyZNJ https://yahoo.jp/box/W-5q1b I reflowed the solder and turned on the power again. :awe: https://yahoo.jp/box/Vh4Bbs https://yahoo.jp/box/vWRV3...
by kobayuz777
October 29th, 2018, 2:25 am
Forum: Game Hardware Q&A
Topic: cps2 gfx sprite issue
Replies: 10
Views: 1098

Re: cps2 gfx sprite issue

I am in the middle of repairing. ;) I tried to replace DL2027, but the missing cross sprites will not be improved. I found a problem reporting similar to this bulletin board. :wtf: Does the IC near CN9 affect objects? So exchange this. In addition, I also exchanged ls245 once. https://yahoo.jp/box/A...
by kobayuz777
October 22nd, 2018, 3:44 am
Forum: Game Hardware Q&A
Topic: cps2 Screen does not appear
Replies: 15
Views: 1314

Re: cps2 Screen does not appear

The data sheet for a DIP 74LS245 will be fine. Mr, leonardoliveira, Mr. pulstar, thank you for the advice! :P t took time, Recently I bought a heat gun. If I exchange 74 ls 245 for a new commercial item I got repaired! I am deeply impressed! :P https://yahoo.jp/box/pb7Mog https://yahoo.jp/box/HfbP-...
by kobayuz777
October 11th, 2018, 3:54 am
Forum: Game Hardware Q&A
Topic: cps2 D&D SOM PAL type and jumper setting
Replies: 8
Views: 761

Re: cps2 D&D SOM PAL type and jumper setting

Address line 16 (A16), for 27C100x is the last address signal, allows reading beyond memory position 65535 (64KB) Address line 20 (A20) , for 27C322 is the last address signal, allows reading beyond memory position 2097151 (2MB) With 128KB EPROMs, if A16 is not connected right the CPS2 can't read t...
by kobayuz777
October 4th, 2018, 3:42 am
Forum: Game Hardware Q&A
Topic: cps2 repair method of correct voltage number
Replies: 37
Views: 2849

Re: cps2 repair method of correct voltage number

I thought about attaching a diode to D5 for the time being. 8-) However, As Board land was peeling off, I think I should make it a jumper. https://yahoo.jp/box/oZDYDC http://akizukidenshi.com/catalog/g/gI-08709/ Is it safe to use Zener diode? The capacitor of CC1 bought a substitute item. should I h...
by kobayuz777
October 4th, 2018, 2:52 am
Forum: Game Hardware Q&A
Topic: cps2 D&D SOM PAL type and jumper setting
Replies: 8
Views: 761

Re: cps2 D&D SOM PAL type and jumper setting

to pulstar to leonardoliveira I see.Thank you for teaching me! :P In the first place, I did not understand it well. PAL and jumper were not related http://wiki.pcbotaku.com/wiki/CPS2_Eprom_and_Jumper_details With the description of the jumper on this page, What do you mean by "A20" "A16" notation? ;)
by kobayuz777
October 3rd, 2018, 8:38 am
Forum: Game Hardware Q&A
Topic: cps2 D&D SOM PAL type and jumper setting
Replies: 8
Views: 761

Re: cps2 D&D SOM PAL type and jumper setting

PAL F is what should be in a D&D: SOM and that jumper setting looks to be correct as well. Is F's PAL setting? :awe: --------------------------------------------------------------------- attached image SOOS SO OSSOSO OSSOOSSO OSSOOSSO Correct PAL-F setting? SOOS SO OSSOSO SOSOSOSO SOSOSOSO --------...