need help - cdp spin no more after kwak clock installation

[atenolol50]

hi,

installed elso kwak clock (with pcb) but cd player (marantz cd63se) wouldn't spin now.

on the few occasions it does spin it behaves strangely.
it goes clockwise for a while then anti-clockwise.
or spins very fast.
or spins very slowly.

"googled" and read that its probably due to the cdp not receiving the clock.
i've tried both the original crystal and a new one to no avail.

need some debugging tips.

thanks.

[stefanobilliani]

Hi atenolol50,

did you desoldered the caps from the original cristal pins to ground , and resistor?

If yes , did you reinsert they in the circuit after the KWAK experiment , retrying the original cristal?

Inserting the KC have you used the 1k series resistor to check the input in the processor ?

[wuffwaff]

Hi,

I also had this with my CD10 and with a CD16. Put the 1MOhm resistor (probably smd) back in place. Then it´ll work.

I suppose you converted it along the LC-Audio guidance? I told them about this mistake but the only anwer was "can´t be"

William

[atenolol50]

i followed the instructions from www.diyparadise.com/clock.html

what wire should i for the clock output?
i'm using a single core cat5, is this ok?

[Bricolo]

If the wire is short (<10cm) it can be ok.

Where are you connecting the clock's pcb ground? at the player's psu, at the old cristal location, at both?

[atenolol50]

Originally posted by Bricolo
If the wire is short (<10cm) it can be ok.

Where are you connecting the clock's pcb ground? at the player's psu, at the old cristal location, at both?

pcb gnd goes to the cdp's chassis, which is earthed to the IEC gnd pin.

[Guido Tent]

Originally posted by atenolol50



pcb gnd goes to the cdp's chassis, which is earthed to the IEC gnd pin.

Best to connect the PCB ground with the twisted wire or coax that also connects the clock (ie close to the original crystal).

Doing so will assure the RF currents will nicely stay together. If the power supply is OK, only DC + clock will run there.

succes

[Elso Kwak]

Hello atenolol50,
First if you have a scope check if the clock is working. Did you adjust the duty cycle? Do you have +/-5V at the output of the regulators?
If you have no clock-signal check if you have a clock signal at the source of the FET. If not, you probably have fried the FET.
I advice connecting the ground of the clock PCB to the ground of the CDP PCB. One end of the two small caps attached to the original crystal was connected to ground. You can use that pad.
The clock output must be connected with one single wire to the players PCB. I do not advice twisted wires or coax!
If nothing works bring the player back to original state and check if it works now.
BTW I have sent you an email but I got no reply from you.............

Very strange.............

Edit:
I now did receive your email and I learned you have built version 6. Some players do not like the large caps notably Sony and CEC. Replace the 12000µF caps by a Oscon not larger than 220µF or a 47µF tantalum or 1 µF polypropylene.

[Jocko Homo]

"The clock output must be connected with one single wire to the players PCB. I do not advice twisted wires or coax!"

And why is that? Inquiring minds want to know.

Jocko

[jean-paul]

Me curious too !

I always use coax as results are optimal.