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Projects => Tech Help - Projects Page => Topic started by: Tcheloviski on July 09, 2013, 09:34:49 PM

Title: Zero Point DD
Post by: Tcheloviski on July 09, 2013, 09:34:49 PM
(1) Project Name: Zero Point DD

(2) General description of the problem: i get only Clean sound and Tick Tick Tick.
Power Regulator Very Hot.

(3) Steps that you have taken to try to resolve the issue:
Checked Wiring 10x or more

1 - Change the pt2399
2 - Change Transistors BC550B
3 - Change Power Regulator
4 - Change Position Of Transistors
5 - Change BC550B For BC108
6 - Change BC108 For BC550B
8 - Change TL072
9 - Check Diodes Position

(4) List any substitutions you used for parts/values
No Subs
Title: Re: Zero Point DD
Post by: midwayfair on July 09, 2013, 10:01:58 PM
You have a short connecting the 9v to ground somewhere.
Title: Re: Zero Point DD
Post by: Tcheloviski on July 10, 2013, 12:53:41 AM
the board have 3 grounds.

2 for 9v
1 for PCI Grounding

i connect 9V Ground in tip
the 9V+ in 9V

All Grounds in rig of input

Correct?



Title: Re: Zero Point DD
Post by: Tcheloviski on July 10, 2013, 03:25:16 AM
i'm holding for doesn't take a hammer and destroy the pcb

Coca cola time.
Title: Re: Zero Point DD
Post by: midwayfair on July 10, 2013, 01:27:04 PM
Ground = common -- all ground points in a circuit are connected together. It sounds like you have that correct.

The tick tick tick sound you've described would be caused by the +9v being connected to the ground. Use your multimeter, on the continuity setting, to see if the +9v is connected to the ground (it will beep). They should not be connected. If they are, then that is the problem you need to fix.
Title: Re: Zero Point DD
Post by: Tcheloviski on July 11, 2013, 05:39:54 PM
http://www.youtube.com/watch?v=B7uia5Z6HFI

Pot Problem?

Title: Re: Zero Point DD
Post by: jimilee on July 11, 2013, 06:00:47 PM
Sounds like a ground issue. How are you powering it? Have you taken any voltage readings yet?
Title: Re: Zero Point DD
Post by: Tcheloviski on October 10, 2013, 02:07:30 AM
Solved TODAY  ;D

Just change The IC and one capacitor.
Sounds nice.
Thanks!