Cd Pro power supply

[CHS]

Hi Guys,
I've built the simple power supply
for the Cd Pro using the R method
for the display panel. Voltage checks
out correctly but when connected up
it dosen't light-up. Connection are
all corrrect. Did I miss something ?
I'm using two 5W parallel 330 ohms
drop resistors. Voltage at Vkk is 22 volts

Thanks

 

[Peter K]

Voltage at Vkk is 22 volts

The VKK psu has to be negative, all info you need is on the Daisy webpages http://www.daisy-laser.nl/homeoptics/page20.html
Or search the forum, you will find a lot of info regarding this problem. (http://www.diyaudio.com/forums/showthread.php?postid=218207#post218207)

Good luck

Peter

 

[CHS]

Hi Peter,
Thanks for your advice.
Sorry the voltage is -VKK
Will tie the ground to pcb
& see if it works.