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Joined: Nov 2007
Posts: 1
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OP
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Joined: Nov 2007
Posts: 1 |
 After some 25 year our old key phone (6 button)gave up the ghost. We replaced the Q1 (Tip34) Motorola Power Transistor, but still have no 24 VDC on pin 2 of the output plug. It looks like the 2nd Transistors is also gone. We only have a electrical drawing for a 6610-301 and not the 6640 therefore it is difficult to check Voltages on the various test points. Does any one repair this? Or does someone have a replacement for purchase. We can post a picture if needed.
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Joined: Sep 2007
Posts: 741
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Joined: Sep 2007
Posts: 741 |
Is the transformer putting anything out?
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Joined: Sep 2007
Posts: 741
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Joined: Sep 2007
Posts: 741 |
Any update Hans?
Start at the xfmer primary and work your way forward. Do you have a schematic?
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Joined: Sep 2006
Posts: 329
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Joined: Sep 2006
Posts: 329 |
Please post a picture. I just tossed one of these out but might be able to retrieve it.
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Joined: Jan 2005
Posts: 15,381 Likes: 13
Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
Joined: Jan 2005
Posts: 15,381 Likes: 13 |
Grim:
Will you please contact me via PM or e-mail? Thanks!
Ed Vaughn, MBSWWYPBX
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