cocaleru
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Post by cocaleru on Jul 17, 2024 14:37:57 GMT
Ok, so my problem is that my HST-3200 japanese gray Saturn is not reading discs. Not music CDs, nor games. I have swapped the whole drive with my other HST-3210 and it's working perfectly so I can assure that the problem is not the reading unit.
Another clue is that the discs are being detected as "track 1 - 728:14 minutes" no matter is a music CD or a game. Maybe this lead to follow on finding a solution.
Don't know where to start working. I already visually checked all the capacitors and they look good and in perfect shape with no leaking at all.
Any ideas?
Regards
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cocaleru
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Post by cocaleru on Jul 18, 2024 8:05:18 GMT
By the way, this unit is the one who has the CD SUBSYSTEM interface board 838-10834 SH1 JA0027 ![](https://i.postimg.cc/ZWKRpn81/SH1-JA0027-FRONT-01.jpg)
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cocaleru
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Post by cocaleru on Aug 5, 2024 8:45:54 GMT
Any?
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mick_aka
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Post by mick_aka on Aug 7, 2024 23:55:56 GMT
Reading all the discs as audio is usually a classic sign of either a laser mis-calibration or falling out of spec due to age/use, but as you've got the laser assembly working fine in another saturn if I understand correctly, my first thought would be a potential power issue.
If you're able to try another power supply in the offending Saturn that would help confirm/deny without the use of more complicated equipment.
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Post by zyrobs on Aug 10, 2024 16:37:10 GMT
Not sure I read it right, you swapped the entire drive out with another from a HST-3210, and it worked: did the HST-3210 drive work in the HST-3200, or did you just swap the laser, or put the HST-3200 drive in the 3210, or what? What about testing both drives in the HST-3210, do both of them work that way?
I haven't seen such an issue where a drive assembly works in one board only but not in another.
I'd try reseating the SH1 sub-board (838-10834) and the ribbons, maybe try with another ribbon too, just in case. If the machine is always showing "track 1 - 728:14 minutes" on all CDs, then the problem is possibly not in the drive but in either the connection between the drive and the console, or the SH1 sub-board. If both drives work in the HST-3210, that would confirm this.
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cocaleru
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Post by cocaleru on Aug 21, 2024 10:38:28 GMT
Not sure I read it right, you swapped the entire drive out with another from a HST-3210, and it worked: did the HST-3210 drive work in the HST-3200, or did you just swap the laser, or put the HST-3200 drive in the 3210, or what? What about testing both drives in the HST-3210, do both of them work that way? I haven't seen such an issue where a drive assembly works in one board only but not in another. I'd try reseating the SH1 sub-board (838-10834) and the ribbons, maybe try with another ribbon too, just in case. If the machine is always showing "track 1 - 728:14 minutes" on all CDs, then the problem is possibly not in the drive but in either the connection between the drive and the console, or the SH1 sub-board. If both drives work in the HST-3210, that would confirm this. Reading all the discs as audio is usually a classic sign of either a laser mis-calibration or falling out of spec due to age/use, but as you've got the laser assembly working fine in another saturn if I understand correctly, my first thought would be a potential power issue. If you're able to try another power supply in the offending Saturn that would help confirm/deny without the use of more complicated equipment.
Hi, thanks to both of you for you replies.
To clarify, yes, I've tested the reader unit of the faulty Saturn (HST-3200) on the healthy one (HST-3210) and it works fine.
I already tried reseating the SH1 sub-board (838-10834) and tested the ribbon continuity with a multimeter. So I believe that those connections are good.
Some guy on reddit suggested the following: "probably needs DRAM chips replacing. Yeah did mine years ago , pretty much same problem. Fitted a newer cd drive an still wouldn't read disks no matter what, replaced DRAM and FRAM working perfectly ever since." reddit
There is also the SH1 board doubt, but I tried to find one online without success. If the culprit is the SH1, I think it will be very hard to find a donor.
Regarding the PSU, don't know if I can swap the one on the HST-3210 with the 3200. Are they compatible?
Regards
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cocaleru
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Post by cocaleru on Aug 22, 2024 12:01:02 GMT
By the way, I've checked PSU voltages and all are ok. Is there anything else that I sould check on the PSU?
Also all the components look good and healthy.
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