Page 2 of 3
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 12 Jan 2021 16:18
by Steve
I have a feeling this poor drive has seen better days, it makes sounds like it's trying to dial-up to SCSI heaven:
Although it did show up as detected once, I haven't able to get it detected again since:
PXL_20210112_154913150.jpg
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 12 Jan 2021 16:23
by exxos
Steve wrote: 12 Jan 2021 16:18
I have a feeling this poor drive has seen better days, it makes sounds like it's trying to dial-up to SCSI heaven:
wow, is the motor actually running ? Kinda sounds like its stuck.
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 12 Jan 2021 16:38
by Steve
It is spinning... just sounds like a dial-up modem when it tries to read.
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 13 Jan 2021 09:46
by stephen_usher
It looks like someone has had it open, given the broken warranty seal.
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 13 Jan 2021 14:27
by MegaSTEarian
Sounds painful :shock:
Hope the customer hasn't got any data in there.
On another note, how easy is to source an HDD like this?
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 13 Jan 2021 17:32
by Steve
I think old small 2.5'' scsi's like this would be hard to find. My customer should have his data backed up to tape so hats good.
I'll be recapping the PSU and motherboard next, I'll post photos when I get to it.
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 22 Jan 2021 20:04
by Steve
BIG UPDATE ON PROGRESS
* Openflops drive installed
* NVRAM replaced
* FPU installed
* Recapped PSU
* Recapped Mobo
* SCSI Terminator installed
* Wait states disabled to increase TOS speed
* Silence fan by wiring to 5v instead of 12, clean dust.
RECAP POWER SECTION
~ BEFORE
power_section_before.jpg
~ AFTER
power_section_done.jpg
RECAP AUDIO SECTION
~ BEFORE
audio_section_before.jpg
~ AFTER Using top-quality Nichicon audio-grade golden caps
audio_section_after.jpg
RECAP MODULATOR SECTION
~ BEFORE
modulator_before.jpg
~ AFTER Note: the 470uf C24 cap is installed the / CORRECT / way, as it is marked incorrectly on board/schematics
modulator_after.jpg
MAKE UP 4700UF MAIN CAP
4700uf_cap.jpg
4700uf_finish.jpg
SILENCE FAN BY WIRING TO 5v & CLEAN DUST
wire_fan_to_5v.jpg
ADD INTERNAL SCSI TERMINATOR (So external drives still work without internal drive)
scsi_terminator.jpg
INSTALL EXXOS NVRAM
nvram_before.jpg
nvram_gone.jpg
NVRAM FINISHED & CAN SEE NEW FPU IN BACKGROUND
nvram_after.jpg
PUT TOGETHER FLASH FLOPPY DRIVE
build_flashfloppy.jpg
~ TEST DRIVE
flashfloppy_test.jpg
INSTALL NEW CF CARD
cfcard_secured.jpg
MOBO FINISHED BEFORE RE-ASSEMBLY
mobo_finished.jpg
TESTING BEFORE CASE FITTING
test_after_shielding.jpg
CLEANING
Cleaned and disinfected with 99% IPA & Keyboard vacuumed of any dust
cleaning1.jpg
cleaning2.jpg
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 22 Jan 2021 20:12
by Steve
WAITSTATES DISABLED FOR FASTER TOS SPEED
waitstates_before.jpg
waitstates_after.jpg
PSU RE-CAP
PXL_20210119_170434552.jpg
PXL_20210119_173043097.jpg
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 22 Jan 2021 20:20
by exxos
Assume you replaced the ROM ? The original ROM will bottle out after a few hours normally.
Re: C-Lab MK2 CA401332-002-REVC / Repair/Restore log
Posted: 22 Jan 2021 20:27
by Steve
exxos wrote: 22 Jan 2021 20:20
Assume you replaced the ROM ? The original ROM will bottle out after a few hours normally.
I checked and this rom has the exact same serial number as the one in your store, so I think it is a fast rom (assuming serial number is a factor) I will of course run benchmarks and tests in the next few days.
@exxos check the fan silencing photo, you can see the ROM there.