Chris -
Even MOLEX pins that 'look like new' can still have enough oxidation to
interfere with the minute currents involved in these radios. If the 5V
supply to the Parent Board is 4.67V, then something is dragging it down,
most likely leaky electrolytics.
It's always a good idea with these rigs to slightly unplug each card and
connector with power OFF, and 're-seat' them before going too far
troubleshooting. Just doing the connectors will 'solve' about 80% of
TR-7 "problems".
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 4-B, C-Line& TR-4/C Service Supplement CDs
<www.k4oah.com>
Chris Hughes wrote:
Thanks for the tip , the MC7805 is runing hot , but checks out ok , as
is the MC78L24C , ill check the other voltages and see whats happening
, the Molex pins are all like new ....
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