Marantz CD63 & CD67 mods list

[grofus]

Originally Posted by 6h5c

Hi Steve,

You can check if the negative display voltage is present at Q851. It should have about -24V at the output.

Ray

Ray,
Measured voltage at Q851 was -0.61v. I'm guessing a broken track or dry joint around the diodes. I measured voltage across the diodes and got no reading on a couple.
Steve

[stevief198]

Hi,

Can anyone help please! Just replaced a pair of op amps and wired in a shielded power cable and put everything back together. Now my player spins a disc but does not recognise a disc.

Help please,

Steve

[Malefoda]

I say gently replace well the small ribbon cable from mech to main PCB. Hope for you it's only that

[6h5c]

Originally Posted by grofus

Ray,
Measured voltage at Q851 was -0.61v. I'm guessing a broken track or dry joint around the diodes. I measured voltage across the diodes and got no reading on a couple.
Steve

Hi Steve,

Hope it's a small problem. You should sort out the negative input voltage to Q851 first. The problem with these boards is, they sit in the player untouched for years, and after tweaking the trouble starts...

Ray

[grofus]

Originally Posted by 6h5c

Hi Steve,

Hope it's a small problem. You should sort out the negative input voltage to Q851 first. The problem with these boards is, they sit in the player untouched for years, and after tweaking the trouble starts...

Ray

Right, got -17.5v at Q851. Broken tracks. But still no display. To be honest, although i'm learning fast, I think it's beyond me. Seemed to have hit a brick wall. For some reason, no voltage across D814, and both DN03/04. Any ideas! cheers, Steve

[stevief198]

Hi all,

just got error 10 in service mode (radial), not sure what this means. Can anyone offer any ideas? Could it be related to swapping opamps.

thanks

Steve

[flyboi]

Hi guys!

I've done the bessel filter mod as per the modded list. I've come across the Mauro Penasa's filter tweak. If I add the Mauro's tweak, will it upset the bessel filter frequency curve? Or is it another must do list?

Eddy.

[Fidelity Audio]

Originally Posted by stevief198

Hi all,

just got error 10 in service mode (radial), not sure what this means. Can anyone offer any ideas? Could it be related to swapping opamps.

thanks

Steve

Error 10 is a radial error. Nothing to do with output. The output should never have any baring on the service mode codes as it is an independant circuit from the servo, decoder, dac & cpu data loop.

Brent

[SimontY]

Originally Posted by stevief198

Hi all,

just got error 10 in service mode (radial), not sure what this means. Can anyone offer any ideas? Could it be related to swapping opamps.

thanks

Steve

You'll probably have disturbed one of the two ribbon cables or a 5V rail. Measure for +5V at each chip (servo, decoder, DAC) and lightly fettle the ribbon from the transport to the main pcb whilst the player's on and see if you can get a response. To check the front ribbon - unplug it and turn the player on - it should read and play the disc, only with no display or controls.

Simon

[RCruz]

The ribbon from the mech to the main pcb is very fragile and once gave me error 10 also.