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hyuma

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About hyuma

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    Star Raider
  • Birthday 11/11/1978

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    Male
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    Italy

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  1. I have 5.4v on one side of R137... I never measured yet R160 Inviato dal mio CLT-L09 utilizzando Tapatalk
  2. Voltage is about 5.45v. And no, I don't have nothing plugged on expansion module Inviato dal mio CLT-L09 utilizzando Tapatalk
  3. Q20: Base: 11.17v Emitter: 11.93v Collector 11.90v Q23: Base: 4.24v Emitter: 3.50v Collector: 7.86v Inviato dal mio CLT-L09 utilizzando Tapatalk
  4. I haven't nothing similar on that pins and also I replaced the oscillator with the same model and the situation didn't changed at all.. I tested 3 different new oscillator and still don't know why I haven't the 4.3mhz wave.. Inviato dal mio CLT-L09 utilizzando Tapatalk
  5. After 2 days of tinkering I start pointing finger to the area of the board near the Lm1889n because now I replaced ram sockets and the image appears and disappear like a scrambled TV... And also image is black/white. I just noticed that oscillator Y3 doesn't show me any freq on any of his pin, and I'm not sure if Lm1889n could be ok... Inviato dal mio CLT-L09 utilizzando Tapatalk
  6. TMS416415NL, but I'm 100% sure that ram are good because I have tested with arduino Inviato dal mio CLT-L09 utilizzando Tapatalk
  7. Ok so, the 2s and 14s pin have all continuity with VDP with no problem, also VDP have good continuity with Z80 too and voltages on RAM +5v pin8 is present, pin 1 have 0v and pin9 around +5v too Inviato dal mio CLT-L09 utilizzando Tapatalk
  8. Ohhhh ok, gotcha! Inviato dal mio CLT-L09 utilizzando Tapatalk
  9. DRAM 2 14 U10 pin 7 vdp 29 U11 pin 3 vdp 25 U12 pin 8 vdp 30 U13 pin 4 vdp 26 U14 pin 9 vdp 31 U15 pin 5 vdp 27 U16 pin 10 vdp 32 U17 pin 6 vdp 28 Like this? Inviato dal mio CLT-L09 utilizzando Tapatalk
  10. What's the scheme means? And yes z80, bios, Sram and vdp have good continuity between them, I checked all combinations possible Inviato dal mio CLT-L09 utilizzando Tapatalk
  11. Continuity between z80, Sram and BIOS is perfect, then I checked the continuity between vdp and DRAM by following the scheme in picture is good too.. Inviato dal mio CLT-L09 utilizzando Tapatalk
  12. When I was reading with logic analyzer I always put the probe on the data lines of Z80, I never used the data lines of BIOS.. Today i got new VDP but the old one is ok, there is the same issue with new one. The DRAM are 8 4164 but I tested with arduino code and they are good.. I have to check traces but they seems cleaned and ok.. Also this is where I get info for the mod https://gamesx.com/wiki/doku.php?id=av:cbs_coleco Inviato dal mio CLT-L09 utilizzando Tapatalk
  13. HOUSTON, WE GOT SOMETHING!! http://imgur.com/a/ldTDWMd http://imgur.com/a/J2DzH3G I found a little broken trace between Sram and BIOS and this is the situation now! OMG THERE IS LIFE!! I tested all DRAM and they're ok, I'm using this composite mod I made...[mention=66741]ChildOfCv[/mention] Inviato dal mio CLT-L09 utilizzando Tapatalk
  14. What I have to do? Sorry I didn't understood Inviato dal mio CLT-L09 utilizzando Tapatalk
  15. Socket are clean, like I cleaned also pins of ICs with IPA and deoxit... This is sampling wihtout VDP, reset is channel 8: https://ufile.io/kbgmeph6
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