MDS-S500 relay is clicking no Standby mode

[Piotr W]

Hi

Im trying to repair MDS-S500. The problem is that after power up the red led is not light, display is blank and relay on power board is clicking loudly once and then starts clicking quietly. Power Board, Display board and BD board with laser are OK for 100% - chcecked in 2nd player. I received this player with belt problem with minidisc blocked inside. I have no schematic for this player so im trying to work with some small understaning how it should work based on other players which i repaired. What i meassure was 3.3V called backup wich delivers the power to the processor to be in standby mode. I meassured it and it looks ok. i replaced all caps in power section, but with no result. it looks for me that the processor is trying to start standby mode but it is not possible because of overload, or something else. As i understand the only voltage in this stage is 3.3V used for standby.

Does anyone has the schematic to this player or service manual ? I know that the processor can be dead but....

Any advice ?

[kgallen]

Belt problems can leave the mech in the wrong position -> machine won’t exit standby. 
 

Try manually winding the gears to insert a disc then see if machine will boot. 

[Piotr W]

You're the best. I didn't even think about that, and I spent my entire struggle not connecting the drive 🙂 i repair faulty drive and i check it in other player. And now I have three MDS-S500s 🙂 

Thx a lot as usual 🙂

Next problem is comming from Japan - this time JA-333ES 🙂

 

[Piotr W]

BTW if anyone wants to convert this player to European voltage im happy to help