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ARCHIVED FORUM -- April 2007 to March 2012
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This is the first Archived Forum which was active between 17th April 2007 and
1st March February 2012
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Thanks Geoff, photosensor now adjusted and working. Guess what! I have another problem! With everything reassembled and no record on the platter, the arm sometimes travels to the very end and then drops onto the empty platter. Sometimes it works ok and returns without dropping, but every so often it will come down. This is after the search light goes
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Hi Geoff, I think you may have misunderstood me. It now works after refitting 1R28 - hence why I suspect it was a dry solder joint. I now have a range of voltages across 1TR11 and 3v at the base of 0TR4 when the solenoid is activated - 3.37v to be precise, but I don't fully trust the accuracy of my meter so I have rounded off all the figures I provided
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Result! Removed 1R28 only to find the value was fine around 150ohms. Replaced it back into the board and now it works! Must have been a dry solder joint though it looked ok before I removed it. Just for the record the voltage at the base of 0TR4 when activated is a little over 3v. The voltage at the solenoid is 31v and 34v referenced to ground, so it
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Oops! I'm a little embarrassed here folks as it appears I do have some voltage readings at some of these points. I rechecked them again this morning and I can only suspect that my meter probably didn't have a good ground connection. Thanks for your help so far guys, it has given me an idea where to start looking. Geoff, I have the circuit diagram
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Hi Folks! After many years I am now the proud owner of my first B&O product. Hmm...one problem though...it doesn't work! Having browsed through the forum I know this topic has been covered several times, but I still can't find the answer I need. Basically the arm doesn't lower. It cues and finds the record and stops at the start. I can