philips cd650 fully modified making jump to nos

[surge]

😀 😀 Hello everyone Im surge writing from sunny New Zealand
I have a cd650 philips which i have had for 16 years and it still goes well .
I have fully modified this machine and recently tried the no nos approach from a circuit posted by marco amboldi .
alas all I get is distortion with the music .
has anyone else tied his circuit .

 

[aparatusonitus]

I have this modification in Philips CD620 and Revox B226. Everything works beautifully, so it has to be your mistake.

 

[markp]

I just pulled my old CD650 out of the junk closet. What mods did you do? I'm thinking about doing mine.

 

[paba]

I've implemented the circuit on my CD650 and it work great and sounded very good too. I had made some other mods to it many years ago called POOGE (3 or 4). Maybe you can check and double check your soldering and trace cuts.

 

[surge]

cd650 plugging on

Thanks for your input guys I will double check every thing again tonight. The only thing I was unsure of was a resistor 3k9
that was sitting on pin 1 of the tda1541. I cut that trace off as well. this is 3329 in cd650 service manual .I wired trace from pin 1 from 7220 directly to pin 1 on tda1541.we shall see..

In reply to what I have done to this player.
pooge 3 and 4
valve output stage srrp e88cc from elecktor book
tda1541 crown
special 5 volt current source on sa7220
strengthned chassis with 5 mm steel
all new seperate power supplies on audio areas
dampened laser mechanism..

The remote is not modified and is still on original batteries

Regards surge
😎

 

[markp]

Is that the pooge from Audio Amature?

 

[paba]

Yeah, those batteries shure lasted long, never managed to find philips batteries again.

Looks like your CD650 is pretty seriously tweeked!

cheers
paba

 

[paba]

yes that's right... you can get the whole story republished here..
www.audioxpress.com/bksprods/books/bkaa25.htm

I have it and it is great reading even if you don't implement them. Also many concepts can be gereralized applied to other gear.

cheers
paba

 

[surge]

I nailed the problem last night guys thanks for all your help..It sounds better unsampled.

Funny how things can become more complicated but not always better when you add more circuits sa77220 complicates the sound abit so why use it ..




😀 😀 Yes the cd player has been pooged Audio Amamauter style
But i also split all digital power feeds from audio .

I also have the trichord 3 clock ..this made big differance

Its a bad thing to mix those two together..

Cheers again people

 

[Skorpio]

How did you connect the clock?

 

[weegs]

hello from john
This unsampled mod I did was over a year ago from a guy Marco Amboldi, from his website amboldi hifi <do a web search>

The crystal connection instead of going to the sa7220 goes to pin 19 on the decoder saa7210 make sure u run a clean supply to the crystal cheers