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Offline alimanTopic starter
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« Reply #210 on: January 30, 2010, 01:17:03 pm »
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Ok I tried your trick when I touch pin 2 of iC5 to +9V rail no sound, but when I touch pin3 to +9V rail I get a buzzing sound


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« Reply #211 on: January 30, 2010, 01:27:50 pm »
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Pin three is the 555 out put to your head phone remember that you still have to re-adjust VR1 so play with the control knob and VR1

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So many questions so little time
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« Reply #212 on: January 30, 2010, 01:37:13 pm »
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Ali . the coil is not THAT important ( as long as it is not shorted out )   . My advice to you is to get yourself  a new set of IC's   and change everything else besides the resistors and capacitors  . Be carefull while taking the transistors out and do a good soldering job . Get yourself a good soldering iron .  get a solder pump to get the old solder off . Don't play around with the wirung any longer . You do not know enough about circuits to repair the one you have .     Cornelius

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« Reply #213 on: January 30, 2010, 01:47:24 pm »
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Yes, this story is getting more confusing. I agree, try changing all the IC's, no better idea.

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Offline alimanTopic starter
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« Reply #214 on: January 30, 2010, 02:18:48 pm »
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Thanks to everybody for trying to help me. I'll have to order the parts, and get back to you guys when they get here.

Cheers  Aliman


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« Reply #215 on: January 30, 2010, 02:24:03 pm »
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Include the TIP 31 A and the  diodes  ( 1N4001 and  1N4148  ) do not order the  IC 3  because you do not need that one .   Cornelius

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Offline alimanTopic starter
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« Reply #216 on: January 30, 2010, 02:49:17 pm »
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Will do !

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« Reply #217 on: January 30, 2010, 04:11:18 pm »
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Ali . It is possible that you cannot find the IC 709 in the form I use it on your board . Take the older type 709 out and replace it with a  8 dill socket  . Now you can order the newer kind of the 709 that will fit in this socket  .  Cornelius

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« Reply #218 on: January 30, 2010, 04:30:01 pm »
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Ok well I may be wrong but personally I don't think that there is any thing wrong with those IC's but we will see once they are replaced .

Xavier


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So many questions so little time
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« Reply #219 on: January 30, 2010, 04:38:48 pm »
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Xavier .  No there is possibly nothing wrong with the  IC's , but for Ali it would be better to change them all . I think it is the TIP 31A that is out because when the coil was short circuited it was subject to the full load . Maybe I am wrong but .... you never know .  Cornelius

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