Delta Pulse

[mohandes]

WHY don't you get the one that works and the one that doesn't work, place them side-by side, and then sort out the differences with an oscilloscope?
I mean, come on man. Use your brain.

because i give it to my friend (sell him )
and now i need help

[Jose]

Monandes, I recently had a problem with a DP that suddenly stopped working, and gave off a continuous sound, what I did was nedir a tester in the function "diode" bilateral switches "4066" that are installed, for example 10 and 11, 3 and 4, 8 and 6, 1 and 2, and compare with another which was fine, rersulto that one was habierto, replace it and everything is back to normal.

[kt315]

check an orientation of IC's.

[mohandes]

Monandes, I recently had a problem with a DP that suddenly stopped working, and gave off a continuous sound, what I did was nedir a tester in the function "diode" bilateral switches "4066" that are installed, for example 10 and 11, 3 and 4, 8 and 6, 1 and 2, and compare with another which was fine, rersulto that one was habierto, replace it and everything is back to normal.

i change before 9,8 and 3,4 and 13,12
ok i change 10,11 and 1,2
but i am sure my problem not for them ( i change all transistor too )
i change C26 , R43 TO 4.7N ,100KOHM
i change R1 , R7 , R9 ,C1 TO 100K , 8.2K , 6.8K , 22N
i change them for more SENSITIVITY to gold .
REGARDS AND YET WAIT FOR YOUR HELP

[mohandes]

HI jose i change all.
i have pulse in TR2 TR3 TR4 TR5. 80US ,150US , 44.5US , 44.5US
well , where is wrong , i measure speaker point and have 0volt and not frequency ?????!!!!!!!!
so if any people help me i can find it.
and i can get in D5 PIN1 AND 7 ,just the sound parts dont work.
if anyone have data about D7 and this point(voltage or freq) more better help
regards

[aaksts86]

hallo .... i have 1 big problem whit delta pulse ...
first my detector work good ...then i have problem whit cd4066 ... and replace ... but replace reverse .... and replace new cd4066 again but .. now my DP not work ....
in tp 2 3 4 5 ... in oscil not have pulse ...... no frecvency ... :/ ...

where i can find problem?
all diode and transistors works

[Jose]

HI jose i change all.
i have pulse in TR2 TR3 TR4 TR5. 80US ,150US , 44.5US , 44.5US
well , where is wrong , i measure speaker point and have 0volt and not frequency ?????!!!!!!!!
so if any people help me i can find it.
and i can get in D5 PIN1 AND 7 ,just the sound parts dont work.
if anyone have data about D7 and this point(voltage or freq) more better help
regards

Mohandes,
To reduce the delay, is 1 nF C4, R7, 10 K. C6 can be reduced and the potentiometer "SENS" for better control of the second sample.
Tensions in D5 pin 1 and 7 alrrededor fluctuate from 0 Volts.
Same for D7 on pin 1 and 7.
When metal is close to the coil, the voltage at pin 1 of D7, increases towards negative. The voltage at pin 7 of D7, increases towards positive, more than 4 volts if the object is large.
In turn, the voltage at pin 7 of D8 (555) increases to over 3 volts negative.
regards

[Jose]

hallo .... i have 1 big problem whit delta pulse ...
first my detector work good ...then i have problem whit cd4066 ... and replace ... but replace reverse .... and replace new cd4066 again but .. now my DP not work ....
in tp 2 3 4 5 ... in oscil not have pulse ...... no frecvency ... :/ ...

where i can find problem?
all diode and transistors works

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

[kt315]

try check the sound

[mohandes]

hallo .... i have 1 big problem whit delta pulse ...
first my detector work good ...then i have problem whit cd4066 ... and replace ... but replace reverse .... and replace new cd4066 again but .. now my DP not work ....
in tp 2 3 4 5 ... in oscil not have pulse ...... no frecvency ... :/ ...

where i can find problem?
all diode and transistors works

i DITINCT by blue OBLONG shape on this image
please remove all ics except 556 then if ok add another ics.

[mohandes]

try check the sound


[ATTACH]27397[/ATTACH]
[ATTACH]27398[/ATTACH]

ok dear kt.
i do that

edit :
i do them KT but yet not ok, i have 0 volts on speaker and no freq
my problem this is :
i set in manual mode for voice then when pot the Tune pot in D7-3 have VARIATION for voltage so i measure D7-1 and again return in max and min SITUATION Tune but for all mode i have 10.9volts (and another pins )so i think maybe problem in these PLACE:
1-D7-2 , i should check 4066s but i give true waves ,or maybe i am mistake ????
please guide me

[mohandes]

hi i upload my pics.
please help

[g.s]

mohandes Recently there was a problem with a series of ne555... Try changing this..

Now a question TO ALL.
to what criteria selected chip PREAMP, We see that the delta you work with the lf357 , and hammerhead with ne 5534 , WHAT ARE THE CRITERIA FOR SELECTION .
Solve me That is the question..
Thanks again in advance of..


mohandes your badge is these ok..

[mohandes]

first wave (yellow )for first write , for example ne556-5 yellow and another is blue for ne556-9
ne556-5 ,ne556-9

ne556-9 , 4538-10(TR4)

4538-10 with another 4538-10

irf840

lf357-6 , tl062 -1

see the photos and guide me
regards

dear g.s
i change it by another ne555 and lm555 and not work
regards

[mohandes]

mohandes Recently there was a problem with a series of ne555... Try changing this..

Now a question TO ALL.
to what criteria selected chip PREAMP, We see that the delta you work with the lf357 , and hammerhead with ne 5534 , WHAT ARE THE CRITERIA FOR SELECTION .
Solve me That is the question..
Thanks again in advance of..


mohandes your badge is these ok..

what ?? my english not well