zclocks Posted September 4, 2023 Share #25 Posted September 4, 2023 Oh shoot! I'm sorry the drawing should have been crystal clear. I think you have it now , but this is what your new installation should look like. Did you power up the circuit board with the tran in your configuration? Ron 2 Link to comment Share on other sites More sharing options...
zclocks Posted September 4, 2023 Share #26 Posted September 4, 2023 What I ment by "crystal clear" was that the drawing of the 3 transistors isn't clear. I need to rotate the transistors 180 degrees. Link to comment Share on other sites More sharing options...
HusseinHolland Posted September 4, 2023 Author Share #27 Posted September 4, 2023 I did, and needless to say it didn't work. I'll change it out for a new one later. I was checking the various values of the other measurable items - it appears there are two 670ohm and one 2m ohm resistors. Zener still drops voltage to 4.4v using a 9v battery. Hopefully I didn't cook anything b sides perhaps the transistor by hooking it up incorrectly. My coil resistance values are the reverse of what you posted though? Link to comment Share on other sites More sharing options...
zclocks Posted September 4, 2023 Share #28 Posted September 4, 2023 Yes, You might have cooked the trans. The coil resistance values can be different and that is why you have 2 -680 ohm resistors . You coil resistance is high and low , but I think it will still work. The normal value of the resistor next to the transistor is 850 ohms. I think they were varying the resistor value depending on the coil resistance/ inductance. This is why I always stay with the same values of the components of the board I'm repairing. Jeco did some weird things. Link to comment Share on other sites More sharing options...
HusseinHolland Posted September 4, 2023 Author Share #29 Posted September 4, 2023 3 hours ago, zclocks said: Yes, You might have cooked the trans. The coil resistance values can be different and that is why you have 2 -680 ohm resistors . You coil resistance is high and low , but I think it will still work. The normal value of the resistor next to the transistor is 850 ohms. I think they were varying the resistor value depending on the coil resistance/ inductance. This is why I always stay with the same values of the components of the board I'm repairing. Jeco did some weird things. Thank you again for your invaluable input Ron. This is the 3rd resistor, next to the Transistor - looking up the 4 band, it appears to be 2M ohm, unless I'm reading the chart incorrectly Replaced the transistor (take 2) it's running now 🙂 2 Link to comment Share on other sites More sharing options...
Popular Post Captain Obvious Posted September 5, 2023 Popular Post Share #30 Posted September 5, 2023 52 minutes ago, HusseinHolland said: it's running now You got to be a little more enthusiastic with the success. You're hiding that little note under all the pics! How about this: "Woo Hoo!!! MY CLOCK WORKS!!!" That's what I would do. 2 5 Link to comment Share on other sites More sharing options...
zclocks Posted September 5, 2023 Share #31 Posted September 5, 2023 Captain is right you should be jumping for JOY!!! 3 1 Link to comment Share on other sites More sharing options...
Yarb Posted September 5, 2023 Share #32 Posted September 5, 2023 Kudos Ron for chiming in to help a fellow member. I personally took notice and appreciated your efforts. Nice job! 4 Link to comment Share on other sites More sharing options...
Popular Post zclocks Posted September 5, 2023 Popular Post Share #33 Posted September 5, 2023 Hey Yarb thanks, I really like helping when I can. I have been helped many times from this site and when I can pay back I do. 8 Link to comment Share on other sites More sharing options...
HusseinHolland Posted September 10, 2023 Author Share #34 Posted September 10, 2023 So, I spoke too soon. The clock worked, but after I reassembled it in the case, it did not. Pulling it back apart, as long as I 'jump start" the wheel, it will run continuously after, but simply connecting it to 12v, nada. Link to comment Share on other sites More sharing options...
Captain Obvious Posted September 10, 2023 Share #35 Posted September 10, 2023 Did it start by itself on the bench when you had it apart? With a 9V battery? Link to comment Share on other sites More sharing options...
HusseinHolland Posted September 10, 2023 Author Share #36 Posted September 10, 2023 1 hour ago, Captain Obvious said: Did it start by itself on the bench when you had it apart? With a 9V battery? Honestly, I can't recall now if I 'helped' it. I left it running for a few days off the battery & it kept good time. I'm going to assume I helped it, since it clearly won't jump start itself. Not sure where that leaves me. Link to comment Share on other sites More sharing options...
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