Bora is a nice guy from Serbia - Yugoslávia

[duran_1960]

Originally Posted by boraomega

Something is very wrong in your unit Duran!!! How do you explain that you have measured +36,5V across ZD2 (that voltage is OK) but then only +1,2V on the upper wire of the 68k resistor? That is the very same wire!!! Also, you have +13,3V across ZD3 when you should measure -13V there (voltage there should be negative with respect to ground!).

For your info, that unit has been done successfully at least several hundred times up to now… “Viktor1986” is one of them, he can tell you that.

Dear Dr. Bora

First off all I want to present thanks for your quickest kindest reply to you.
I'll check again all voltages and parts once more. Do you have any pre-test procedure of it before the hook up into amp. different then checking the voltage and finding the wrong parts??
Best regards

[viktor1986]

Set the image in high resolution and also photograph plate from the bottom. Thus I do not see almost anything and especially those two 1N4148 diodes which are in parallel with 150nF(yellow blocks).

What I see, you're wrong turn LF353?

[duran_1960]

Originally Posted by viktor1986

Set the image in high resolution and also photograph plate from the bottom. Thus I do not see almost anything and especially those two 1N4148 diodes which are in parallel with 150nF(yellow blocks).

What I see, you're wrong turn LF353?

I'll de solder of them for taking good picture.

[viktor1986]

Upload two photos of high quality, one can see the layout and the other where is the copper.

[duran_1960]

Here is the other pict.
Thank you very much in advance

[duran_1960]

Sorry for late because I use two different pc .s one is for pic. editting another for sending.
Best regards

[duran_1960]

Dear Victor

Could you e-mail me your recent schematics and layouts/part lists etc. for Omni because Ones that are in my hand show me some differances between sch. and layout?
I was already dowloaded it from following link :redesign of leach amp pcb for integrated TO-247 output devices
Best regards

[viktor1986]

It seems all OK in the picture. No you can get a voltage of 13V where there are marked, there must be -13V DC. I have personally made several omni protections and there are no mistakes, except of course if you're somewhere wrong around the value resistor or perhaps a faulty components.

How many volts are relays and that resistance spool? What is the value of the resistor that goes to the entrance LM7824, from +66 V to the input 7824?

There is no need to send you anything because you found on that link.

[boraomega]

I’ve done some modifications of appearance and functionality of my WEB site recently, and I also added a link to my BLOG for visitors willing to leave comments about me or my site.
Now entry page is:
:::Borina Amaterska Svastara:::

[destroyer X]

regards,

Carlos