Hello everyone,
I'm very new to arcade hobby and fixing things.
I bought faulty (must start somewhere right?) Raiden 2 pcb.
Problem : Graphics are distorted. Some numbers shown. Some text's are corrupted or wrong.
What is working : Game playable, coins up, starts, all controllers works well. Sound Good.
First; i was testing the system with my 9" Sony CRT PVM using supergun + SCART RGB (my test bench)
There was a sync issue. Then i tried with my play system (custom made supergun + 20" Sony crt PVM RGB)
And there was no sync issues. Only graphic problems.
Then i have found out that on my play test system 5V rail is 4.98V but my test bench 5V rail is 4.82V. When i adjust it to 5V sync issue resolved.
Okay so far what i have done listed; open to any suggestions.
1-) removed Roms 1-2-5-6-7 . I was able to read 5-6-7 but couldnt read 1-2. Because i don't know which type of roms they are. They are labeled ZR240p-2. I tried with 27c240 but when i present it to romident website it says
Any suggestions hw to read 1 and 2?
5-6-7 was fine. Cleaned contacts slots and reseated them back.
5 DUMP
6 DUMP
7 DUMP
2-) I've applied force to the pins of SEI360, SEI252 and SEI1000 to see if any pins not connected. But all were ok.
3-) While system works i have applied force with my finger to all chips one by one. Nothing changed on screen.
4-) I've test every chip for 5V rail. All ok.
5-) I've piggybacked all 74LS245N chips. nothing changed (2 of them makes graphics worse, maybe my chips are bad)
6-) Checked all chips for any overheating. None detected.
7-) I thought maybe ram chips are broken. on U067 and U0611 (CY7C85-35PC). and piggybacked them with whatever i have (same pinout and same sizes sram) --> MT5C6408. nothing changed.
What can i do more?
I have a logic probe and know how to attach it but i don't know what to look for
It is elenco branded.
I'm very new to arcade hobby and fixing things.
I bought faulty (must start somewhere right?) Raiden 2 pcb.
Problem : Graphics are distorted. Some numbers shown. Some text's are corrupted or wrong.
What is working : Game playable, coins up, starts, all controllers works well. Sound Good.
First; i was testing the system with my 9" Sony CRT PVM using supergun + SCART RGB (my test bench)
There was a sync issue. Then i tried with my play system (custom made supergun + 20" Sony crt PVM RGB)
And there was no sync issues. Only graphic problems.
Then i have found out that on my play test system 5V rail is 4.98V but my test bench 5V rail is 4.82V. When i adjust it to 5V sync issue resolved.
Okay so far what i have done listed; open to any suggestions.
1-) removed Roms 1-2-5-6-7 . I was able to read 5-6-7 but couldnt read 1-2. Because i don't know which type of roms they are. They are labeled ZR240p-2. I tried with 27c240 but when i present it to romident website it says
| Dark Horse (bootleg of Jockey Club II) | gfx7 | gfx1 | 300000 | |
| pangofun | Pango Fun (Italy) | bank2.u13 | game_prg | 300001 |
| pangofun | Pango Fun (Italy) |
Any suggestions hw to read 1 and 2?
5-6-7 was fine. Cleaned contacts slots and reseated them back.
5 DUMP
| game | desc | rom name | region | offset |
| raiden2b | Raiden II (set 3, Japan) | seibu5.u1110 | audiocpu | 0 |
| raiden2nl | Raiden II (set 9, The Netherlands) | 5_u1110.bin | audiocpu | 0 |
| raiden2a | Raiden II (set 2, Hong Kong, Metrotainment) | seibu5.u1110 | audiocpu | 0 |
| raiden2b | Raiden II (set 3, Japan) | seibu5.u1110 | audiocpu | 0 |
| raiden2nl | Raiden II (set 9, The Netherlands) | 5_u1110.bin | audiocpu | 0 |
6 DUMP
| game | desc | rom name | region | offset |
| raiden2a | Raiden II (set 2, Hong Kong, Metrotainment) | seibu6.u1017 | oki1 | 0 |
| raiden2b | Raiden II (set 3, Japan) | seibu6.u1017 | oki1 | 0 |
| raiden2c | Raiden II (set 4, Italy) | seibu6.u1017 | oki1 | 0 |
| raiden2nl | Raiden II (set 9, The Netherlands) | 6_u1017.bin | oki1 | 0 |
| raiden2 | Raiden II (set 1, US Fabtek) | seibu6.u1017 | oki1 | 0 |
| raiden2a | Raiden II (set 2, Hong Kong, Metrotainment) | seibu6.u1017 | oki1 | 0 |
| raiden2b | Raiden II (set 3, Japan) | seibu6.u1017 | oki1 | 0 |
| raiden2c | Raiden II (set 4, Italy) | seibu6.u1017 | oki1 | 0 |
| raiden2nl | Raiden II (set 9, The Netherlands) | 6_u1017.bin | oki1 | 0 |
7 DUMP
| game | desc | rom name | region | offset |
| raiden2a | Raiden II (set 2, Hong Kong, Metrotainment) | seibu7.u0724 | gfx1 | 0 |
| raiden2b | Raiden II (set 3, Japan) | seibu7.u0724 | gfx1 | 0 |
| raiden2c | Raiden II (set 4, Italy) | seibu7.u0724 | gfx1 | 0 |
| raiden2nl | Raiden II (set 9, The Netherlands) | 7_u0724.bin | gfx1 | 0 |
| raiden2 | Raiden II (set 1, US Fabtek) | seibu7.u0724 | gfx1 | 0 |
| raiden2a | Raiden II (set 2, Hong Kong, Metrotainment) | seibu7.u0724 | gfx1 | 0 |
| raiden2b | Raiden II (set 3, Japan) | seibu7.u0724 | gfx1 | 0 |
| raiden2c | Raiden II (set 4, Italy) | seibu7.u0724 | gfx1 | 0 |
| raiden2nl | Raiden II (set 9, The Netherlands) | 7_u0724.bin | gfx1 | 0 |
2-) I've applied force to the pins of SEI360, SEI252 and SEI1000 to see if any pins not connected. But all were ok.
3-) While system works i have applied force with my finger to all chips one by one. Nothing changed on screen.
4-) I've test every chip for 5V rail. All ok.
5-) I've piggybacked all 74LS245N chips. nothing changed (2 of them makes graphics worse, maybe my chips are bad)
6-) Checked all chips for any overheating. None detected.
7-) I thought maybe ram chips are broken. on U067 and U0611 (CY7C85-35PC). and piggybacked them with whatever i have (same pinout and same sizes sram) --> MT5C6408. nothing changed.
What can i do more?
I have a logic probe and know how to attach it but i don't know what to look for
It is elenco branded.
