Barracuda Legend Kit Problems

[Impulse]

iron was too hot
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soldering station

thanks for the tip but its too late now i will upgrade at some point but until then i have no soldering iron, i has smashed it to little bits

[Old cart]

thanks for the tip but its too late now i will upgrade at some point but until then i have no soldering iron, i has smashed it to little bits

Well that is a shame.
Electronics, especially when we do it remotely like we have been doing, is hard. It is a tough balance to understand what is known and seen on the other end of the conversation without actually being there. I did this frequently over a 31 year period but there the equipment was some that I was very familiar with.
Take heart that you have not damaged your board.
Do you still want to carry on?

[Old cart]

KT315, have you ever looked at the barracuda gate drive pulses with a scope? If so, what amplitude should we expect? If you have been following this thread you'll see we have some unusual signals.

[Impulse]

The board is still in one piece i have removed my soldering iron and i will get another (much better one). Old cart thank you for your patience i really want this to work as we have spent a good amount of time on this i thought all was lost, i dont want to waste all the time that you have put in to help me.

OK the battery voltage is 11.5V

Pin2 CH1 Pin4 CH2 here

[Old cart]

Impulse, here is what the sampling pulse (bottom trace) and the 5534 pin 6 signal should look like if it is correct.

http://www.geotech1.com/forums/attac...9&d=1309516746

Your preamp pin 6 signal is right, the sampling signal is not. In fact all of the signals associated with the 40106 look wrong. Once we get the 40106 working it should be a simple matter to adjust the delay to the correct position.
Cheers,

[Impulse]

o and the probes are 10X and the channels have been changed to 10X

[Old cart]

The board is still in one piece i have removed my soldering iron and i will get another (much better one). Old cart thank you for your patience i really want this to work as we have spent a good amount of time on this i thought all was lost, i don't want to waste all the time that you have put in to help me.

OK the battery voltage is 11.5V

Pin2 CH1 Pin4 CH2 here [ATTACH]35381[/ATTACH]

Well, those are still wrong (perfect measurement, just wrong waveforms). Don't worry about the time, I now have enough time in it that I must carry on. I will try to keep a stiff upper lip! See post 185 for what the sample waveform should look like.
At the moment I am at a loss as to what to do other than trying another 40106. I spent some time looking at your top and board pictures and they look fine. unless you can take even better pictures we are stuck there. It is possible that I could be missing something because I can not read or test resistor/cap values. We could try an in-circuit measurement of the board with the 40106 removed, if you are up to it.
Also, still need to measure the regulator outputs 78L05- 79L05 out pins relative to ground. Use your multimeter but be careful not to short the output.
I also suggest you charge your battery, it is getting low.

[Impulse]

Old cart thank you, and out of curiosity i had a look at pin6 of the 5534 and this is what i got since playing with the soldering.

here

[6666]

Impulse, after having a look at the copper side of your pcb, the first thing I would be doing is cleaning the flux off
by useing a soft brush and denatured alcohol, IE methylated spirits let dry and clean again any remaining residue, a clean pcb is a happy pcb
thick flux can sometimes do strange things on PI's

[Impulse]

6666, ok i will clean as best i can i have some rosin solvant i use

i have put CH1 and 2 on the output of 78l05 and 79l05 and this is what i got ?

here

[Old cart]

6666, ok i will clean as best i can i have some rosin solvant i use

i have put CH1 and 2 on the output of 78l05 and 79l05 and this is what i got ?

here [ATTACH]35383[/ATTACH]

Actually I meant MULTIMETER.

[Impulse]

ahhhh i c sorry! ok 5.067v78l05 5.020v79l05 batt 11.45v

[Old cart]

Impulse those look good. It would not hurt to charge the battery.

[Old cart]

Old cart thank you, and out of curiosity i had a look at pin6 of the 5534 and this is what i got since playing with the soldering.

here [ATTACH]35382[/ATTACH]

This looks like the damping resistor has either burned up or become unsoldered.:<(

Looks like you also went back to using x1-GOOD SHOW, you are learning! I thought the x10 was causing loading problems. It was not and making the signal smaller only succeeded in adding more noise.

[Impulse]

ok i have measured the damping resistor and i get 2.1ohm (AH!!!!) i will replace it once i get a new soldering iron as my last one no longer functions as it should (should be tomorrow)

is this one ok ? https://www.machinemart.co.uk/p/drap...ering-station/