CDB 650 with TDA1541A S1 not working - Page 2

JOE DIRT® · 22nd April 2003, 06:10 PM

QUOTE: I tested the cables from the 32V PSU and found that the red #3 pos (grd) came loose but I'm not sure there wasn't a connection before I pulled it.

Apass the red wire is not ground

apassgear · 22nd April 2003, 06:26 PM

Joe,

It also cought my attention but position 3 (#3 pin) is shown as ground on the schematic, and sure is. And pin #4 (+32V) is a gray wire on my CDP. Go figure.

Jaap · 22nd April 2003, 08:20 PM

put a kwak-clock inside that 650 as soon as it is working again. I just did that with a dramatic (positive) change in behaviour of both the player and the owner. It makes you dance.

What can i do next to make it even better ?

Jaap

apassgear · 22nd April 2003, 11:15 PM

Some more info.

Changed the zener (8V) to a new 9V, same thing. (2.4V at wires).

Next I checked the power supply away from the circuit load with a 0.7 Amp load and voltage is ok at 33.5.

So the problem is at the front pannel or else I still have a problem with the cables/connector, will recheck.

I hate to disasemble the front pannel, it's a messy thing to do. But....

apassgear · 22nd April 2003, 11:23 PM

Jaap,

That's a good advise I have thought of that in the past but since this is not my usual front end I'll think about it.

I have heard a lot of good things about Eslo's clock and think this could be an excellent mod for this CDP.

apassgear · 23rd April 2003, 06:35 PM

Hi all you guys,

Thanks for the help, all suggestion were right on the mark.

After tripping a couple of times I redid the whole termination of the connector, it apears that most all of the wires were shot or about too.

The player now lights the front pannel and controls seem to perform. The remaining problem is with the stuck tray , not coming out, but that should be a simple mechanical problem that I don't see difficult to solve.

Happy listening...

22nd April 2003, 08:20 PM	#13
Jaap diyAudio Member Join Date: Dec 2002 Location: Netherlands	free advice put a kwak-clock inside that 650 as soon as it is working again. I just did that with a dramatic (positive) change in behaviour of both the player and the owner. It makes you dance. What can i do next to make it even better ? Jaap

23rd April 2003, 06:35 PM	#16
apassgear diyAudio Member Join Date: Nov 2002 Location: Viña del Mar, Torreon	No Substitute for EXPERIANCE... Hi all you guys, Thanks for the help, all suggestion were right on the mark. After tripping a couple of times I redid the whole termination of the connector, it apears that most all of the wires were shot or about too. The player now lights the front pannel and controls seem to perform. The remaining problem is with the stuck tray , not coming out, but that should be a simple mechanical problem that I don't see difficult to solve. Happy listening...

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22nd April 2003, 06:10 PM	#11
JOE DIRT® diyAudio Member Join Date: Apr 2003 Location: Brantford, ON	QUOTE: I tested the cables from the 32V PSU and found that the red #3 pos (grd) came loose but I'm not sure there wasn't a connection before I pulled it. Apass the red wire is not ground

22nd April 2003, 06:26 PM	#12
apassgear diyAudio Member Join Date: Nov 2002 Location: Viña del Mar, Torreon	Joe, It also cought my attention but position 3 (#3 pin) is shown as ground on the schematic, and sure is. And pin #4 (+32V) is a gray wire on my CDP. Go figure.

22nd April 2003, 11:15 PM	#14
apassgear diyAudio Member Join Date: Nov 2002 Location: Viña del Mar, Torreon	Some more info. Changed the zener (8V) to a new 9V, same thing. (2.4V at wires). Next I checked the power supply away from the circuit load with a 0.7 Amp load and voltage is ok at 33.5. So the problem is at the front pannel or else I still have a problem with the cables/connector, will recheck. I hate to disasemble the front pannel, it's a messy thing to do. But....

22nd April 2003, 11:23 PM	#15
apassgear diyAudio Member Join Date: Nov 2002 Location: Viña del Mar, Torreon	Jaap, That's a good advise I have thought of that in the past but since this is not my usual front end I'll think about it. I have heard a lot of good things about Eslo's clock and think this could be an excellent mod for this CDP.

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