Delta Pulse

[kt315]

Folks, how much pcs (amount) of boards I have to order to be enough? 10? 20? 50??

[Jose]

I replace ne556 ... and not working


test all soldering connection ... all ok ...

In the distance, we can only suggest possible solutions.
If we have no pulse TR2, obviously comprises the step and its associated circuitry 556, do not work.
This step will not work if lefalta feeding, which is the first thing to check, it often happens that for some reason opens one of the diodes D8 and D9, lacking the tension "-E".
Check the voltage on pin 7 and 14 of the 556 "-E" and nearby components.
Jose

[aaksts86]

I replace ne556 ... and not working


test all soldering connection ... all ok ...

If no pulse at TR2, the fault could be in the 556 and its associated components.
Neither will have pulses in TR3, TR4, and TR5.
Jose

[mohandes]

Some things are just plain wrong. Using gasoline to clean a PCB is one of them.

Ethyl Alcohol is best. And then if you have any left over, you can drink it mixed with your favorite beverage... enjoy it along with your favorite tobacco substitute.

Don't try that with gasoline.

to clean by gasoline last time and to fire. burn it out. with a residue. i can not see calmly a trash (

thanks guru
but i ask you and i try yet this part ver.6 dp.JPG ,so i think my problem here,but yet not found.i have a new board like turkey again tomorrow .
regards

[davros]

how about steel wool ? been using that idea for 40 years if you are talking about the copper to solder

[porkluvr]

Some things are just plain wrong. Using gasoline to clean a PCB is one of them.

Ethyl Alcohol is best. And then if you have any left over, you can drink it mixed with your favorite beverage... enjoy it along with your favorite tobacco substitute.

Don't try that with gasoline.

[kt315]

I think gasoline will leave a residue.

to clean by gasoline last time and to fire. burn it out. with a residue. i can not see calmly a trash (

[mohandes]

very incredible i do this , and i wait here to my friend to find my problems
LOOK
[ATTACH]27443[/ATTACH]

any gurus have not idea ??

[porkluvr]

i clean board (GASOLENE ) and again check these points that you certain .

You will use gasoline to clean PCB??

Alcohol is the preferred substance to use. Isopropyl alcohol, methyl alcohol or ethyl alcohol etc. ALCOHOL

I think gasoline will leave a residue.

[mohandes]

clean all pins of resistors caps transistors etc BY ERASER BEFORE THE TINNING!

look this photo!

[ATTACH]27438[/ATTACH]

very incredible i do this , and i wait here to my friend to find my problems
LOOK

[kt315]

regards and again test but i will make new delta that kt past here.

it is yet not ready... do not do... I have to check the layout on mistakes... wait a time the board will be made and tested.

[kt315]

i clean board (GASOLENE )

clean all pins of resistors caps transistors etc BY ERASER BEFORE THE TINNING!

look this photo!

[mohandes]

Monhandes, take heart.
The flaw in my DP to comment before, cost me two days to fix.
Perform the Surf PI, and two weeks later it ready.
My GS4 was suspended for 8 months. Depues resume work and even today, I still improved.
I have a board star pulse to undertake a year ago and did not finish.
I could never do my work well "Tesoro Gool Sabre".
However I had no problems with the IDX-PRO.
As you see, we have problems, (I'm an amateur).
Do not throw away your PCB, rest for a few days and then continue.
Jose

Mohandes, here are two things I notice about the back of your board.

1. Too much solder on the joints. LESS is better. Do not leave globs, or blobs of solder when you make a solder joint. You can have a bad solder joint and just because it has gobs of solder, that does not make it good. Make it look nice. It works better that way.

2. PCB needs to be cleaned with alcohol or water, or whatever it takes to get the solder flux off your PCB. What you use to clean flux depends on the type of flux. Even "No Clean Flux" should probably be removed. Rosin flux absolutely needs to be removed 100%. Ditto water soluble flux (get it off)!

Do not let flux sit on your PCB for more than a couple of hours before you clean, it will be very difficult to get it off if you do that.

Unless you are absolutely sure that the flux you use does not adversely affect the operation of the circuit it is used on, then CLEAN IT OFF.

thanks jose and porkluvr
but if you see my out put you can see all out put NEARly ok , and before i soldering the copper lines i have not value or frequency in speaker .
when i remove coil i test D7 by Tune pot but i have not change in pin1 ,6 ,7 ,so i have a problem them.so what do you think ??
dear jose i make psg but not staible ( otr i can not fix it ) , make barracuda and have a bad depth , make idx good but disk pot not work well and this VDI
dear porkluvr i all time say , you teaching me all thing that i dont know , and i want best wishes for you.
i clean board (GASOLENE ) and again check these points that you certain .
but real question i ask you above , SINCE when i am not soldering coppers line i have this problem , and i think my problem in 4066s or D7 or any thing related to D7.

regards and again test but i will make new delta that kt past here.

[porkluvr]

Mohandes, here are two things I notice about the back of your board.

1. Too much solder on the joints. LESS is better. Do not leave globs, or blobs of solder when you make a solder joint. You can have a bad solder joint and just because it has gobs of solder, that does not make it good. Make it look nice. It works better that way.

2. PCB needs to be cleaned with alcohol or water, or whatever it takes to get the solder flux off your PCB. What you use to clean flux depends on the type of flux. Even "No Clean Flux" should probably be removed. Rosin flux absolutely needs to be removed 100%. Ditto water soluble flux (get it off)!

Do not let flux sit on your PCB for more than a couple of hours before you clean, it will be very difficult to get it off if you do that.

Unless you are absolutely sure that the flux you use does not adversely affect the operation of the circuit it is used on, then CLEAN IT OFF.

[Jose]

Monhandes, take heart.
The flaw in my DP to comment before, cost me two days to fix.
Perform the Surf PI, and two weeks later it ready.
My GS4 was suspended for 8 months. Depues resume work and even today, I still improved.
I have a board star pulse to undertake a year ago and did not finish.
I could never do my work well "Tesoro Gool Sabre".
However I had no problems with the IDX-PRO.
As you see, we have problems, (I'm an amateur).
Do not throw away your PCB, rest for a few days and then continue.
Jose