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[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboDuo/PC Engine Duo/R/RX: Laser Swap & Adjustment Guide]

Still no success for now  I ordered an other HOP-M3 module just in case... Steve, if you happen to find points on duo pcb where i could plug my oscilloscope to see what's going on, that would be great!

Cheers,
   Mike

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboDuo/PC Engine Duo/R/RX: Laser Swap & Adjustment Guide]

Yeah,it is a really long lasting work! I'm gonna try an other "hardcore" session and if it doesn't work, i'll try to do it with my oscilloscope if i happen to find necessary point points on the motherboard. I really want to play my forgotten world again 

Mike

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboDuo/PC Engine Duo/R/RX: Laser Swap & Adjustment Guide]

Thanks for your help! I'll check pot value on both old and new lens and adjust the new one a bit lower as you suggest to see if it helps. Can you confirm it should start reading only by messing with VR 101 ? I don't have to touch VR 103 for now?

Mike

Update: got my music CD start playing but after a few seconds,  sound get crunchy and it stops   Any hints?

[Console Repair/Mod Center / Re: REPAIR GUIDE - TurboDuo/PC Engine Duo/R/RX: Laser Swap & Adjustment Guide]

Thanks for this guide! I'm trying a calibration but I'm a bit lost in the middle of the process... Here's the story/ My recaped duo had some difficulties reading original CDs, loading time were getting longer and longer...well my lens was dying.So i bought a new HOP-M3 and installed it crossing my fingers that it would work straight away. Well, it didn't, CD spins faster and faster then stop with the infamous "please set disc". I red the tutorial and as Cd was spinning , i by passed VR104 and VR102 adjustment. So then i aimed VR 101 with no result... all i got is this vinyl scratch alike sound or no sound at all but disc spinning faster and faster until i get the please set disc. When turning CR 101, i'm able to modulate time before the psd of death , laser seems to read with those scratchy noises but no luck...
Maybe i'm doing something wrong but i don't have a clue so here are my questions:
can we adjust the pot "live" meaning can we turn the pot(change the value)  while the disc is spinning or do we have to try a value, try to load disc, stop, change value, try to load, etc...?
Do i have to check for VR 103 now or should my CD (original audio) start to play only by adjusting VR 101?
As i got an oscilloscope at home, is there a tutorial on how adjust pots using oscilloscope?

Thanks again for this thread,

  Mike