Reclocking Meridian 506 CDP

After reading Wikin and other positing on the CDP upgrades, I finally took courage and embark on a similar DIY project.  

My Meridian was having track skipping problem.  I changed the laser lens, but the problem persisted after a few days of use.  I solved this problem by changing all the PSU caps on the servo controller board using Panasonic FCs caps.  While I was at it, I also decided to change all the PSU caps since the CDP is over 20 years old.

It took me a while to plan a DIY upgrade my Meridian 506 CDP. Unlike  some Philips and Marantz CDP, there were not much information on the net on Meridian 506 - no schematics nor modifications. I also contacted Meridian for the schematics, but no avail. The effort was in tracing and studying the circuit and components.

I finally did the following :-
i. Upgrade to Burson dual opamps,
ii. Reclocked using a DIY TCXO clock and shunt power supply
iii. Recaped all the PSU capacitors
iv. Changed the voltage regulators (7805) to LT1085.


  


PM me if you have a Meridian schematics, or want to embark on your own DIY project to upgrade your M 506. I would be happy to share with you the schematics and components tracing/values that I have developed in my DIY project.

Any significant improvements?

Maybe silly of me to pose such a question. 
I presume it's obviously a successful upgrade.

Nice work MTHoi; I like that pcb for the clock - components laid out just nice and well implemented.

cheers

Hi MTHOI,
thanks for sharing.  As usual, tidy and neat handiwork !
this reminds me. I have a 20yr krell kps 30i in my store room  waiting for a similiar upgrade.
I am sure you have the next project after this .Post  more pictures .
regards
kp93300

Hi Wikin, Dr KP,  tx for the encouragement. The next project is to do more work on my TDA1541 DAC - done the PSU upgrade and DEM reclock.  Now looking into tube stage IV with lundahl OPT.  Will update when done.

Reg.

tube may be fancy,but lacking too much in BASS department.Think twice!
i perfer stock original although be a littler lesser.

mthoi, after so much of works,how is the final result?
is it worth the effort?
many readers are waiting for your answer?