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PS2 DESR-7500 Disc not spinning

nino

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I recently replaced a broken laser (Sanyo SF-DB11) in a DESR-7500.

Before replacing the laser, discs were not recognized (except in PS2-mode when booted with FMCB), but the motor was spinning. Reading discs in PS2 mode worked fine.

Now, the motor won't spin. In PSX-mode, the PSX-laser laser also does nothing and absolutely nothing happens. In PS2-mode, the PS2 laser will try to focus on the disc and is able to move around, but the disc won't spin, either.

I fully disassembled and reassembled the console, checking every single connection (including inside the drive).

There is some blinking red LED on the main board, that is normally not exposed to the outside. Since there are no service manuals available, I have no idea what that LED stands for. It might stand for some kind of hardware fault, but the console still boots up normally to XMB.

I also reinstalled the original laser, but it still didn't spin. After that, I installed some brand new matching flex cables (for both, 50 pin 0.5mm data and 16 pin 1mm power/PS2-Laser), just to rule out damage to the old flex cables. All of this didn't change anything. Even the blinking red LED on the main board is still there (which can be seen from the sides through the vents, if the plastic covers aren't on).

Also, what function does the daughterboard with the large FPGA and that unused connector (for factory programming?) have in the console? When following the traces, it is connected to the data cable between the main board and the drive board.

Any advice?
 

Tokimemofan

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I recently replaced a broken laser (Sanyo SF-DB11) in a DESR-7500.

Before replacing the laser, discs were not recognized (except in PS2-mode when booted with FMCB), but the motor was spinning. Reading discs in PS2 mode worked fine.

Now, the motor won't spin. In PSX-mode, the PSX-laser laser also does nothing and absolutely nothing happens. In PS2-mode, the PS2 laser will try to focus on the disc and is able to move around, but the disc won't spin, either.

I fully disassembled and reassembled the console, checking every single connection (including inside the drive).

There is some blinking red LED on the main board, that is normally not exposed to the outside. Since there are no service manuals available, I have no idea what that LED stands for. It might stand for some kind of hardware fault, but the console still boots up normally to XMB.

I also reinstalled the original laser, but it still didn't spin. After that, I installed some brand new matching flex cables (for both, 50 pin 0.5mm data and 16 pin 1mm power/PS2-Laser), just to rule out damage to the old flex cables. All of this didn't change anything. Even the blinking red LED on the main board is still there (which can be seen from the sides through the vents, if the plastic covers aren't on).

Also, what function does the daughterboard with the large FPGA and that unused connector (for factory programming?) have in the console? When following the traces, it is connected to the data cable between the main board and the drive board.

Any advice?
Check the connectors for oxidation or damage
 

vitas155

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I faced the same problem on my 7500, I still haven't found a solution
 
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