CD player supply problems

Mikhail · 12th December 2006, 06:18 PM

I've modded my Denon with separate 5v digital supply. After this mod player doesn't work properly - It starts spinning a disk in reverse directions. But sometimes it works OK, especially right after opening and closing a tray. Player utilizes Sony CXA1372 and CDX2500. Can someone give me a clue what can be wrong?

Best Regards
Mike

Netlist · 12th December 2006, 06:39 PM

I would reverse my action and see if it behaves.
What's the type#?

/Hugo

Mikhail · 13th December 2006, 07:01 AM

If reversed it works OK. Originally there is simple 7805, I use lm317 on separate board.

Netlist · 13th December 2006, 07:16 AM

What about a schematic of the 5V supply you created?

/Hugo

Mikhail · 13th December 2006, 08:39 AM

Hugo, thank you for replying. It's a standard schematic with 2 resistors and 2 capacitors. Interesting moment is when I make the regulator on mainboard of the player (in the place of 7805 chip) it works, when I make it on separate PCB it doesn't work.

regards
Mike

12th December 2006, 06:18 PM	#1
Mikhail diyAudio Member Join Date: Nov 2006	CD player supply problems I've modded my Denon with separate 5v digital supply. After this mod player doesn't work properly - It starts spinning a disk in reverse directions. But sometimes it works OK, especially right after opening and closing a tray. Player utilizes Sony CXA1372 and CDX2500. Can someone give me a clue what can be wrong? Best Regards Mike

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12th December 2006, 06:39 PM	#2
Netlist diyAudio Moderator Join Date: Jan 2003	I would reverse my action and see if it behaves. What's the type#? /Hugo

13th December 2006, 07:01 AM	#3
Mikhail diyAudio Member Join Date: Nov 2006	If reversed it works OK. Originally there is simple 7805, I use lm317 on separate board.

13th December 2006, 07:16 AM	#4
Netlist diyAudio Moderator Join Date: Jan 2003	What about a schematic of the 5V supply you created? /Hugo

13th December 2006, 08:39 AM	#5
Mikhail diyAudio Member Join Date: Nov 2006	Hugo, thank you for replying. It's a standard schematic with 2 resistors and 2 capacitors. Interesting moment is when I make the regulator on mainboard of the player (in the place of 7805 chip) it works, when I make it on separate PCB it doesn't work. regards Mike

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