[ICOM] IC761 Problems.

[Gary P. Fiber]

TX indication light come on?
     Does the receiver go quiet when you try using the PTT or manual 
front panel TX switch?
    Using the mic?
    Using the front panel switch?
    Goes into transmit when Grounding Pin 3 on the ACC socket, verify 
its PTT before you do that in your manual.

My guess is If it does nothing might be TX 8 volts regulator is in 
trouble or switching transistor that supplies the TX 8 volts..

When you change frequency in receive need to do band changes, do the 
caps move in the tuner? if you can't see them move can you hear the 
motors run?
     They should move a bit as the caps will travel to the preset 
positions you originally set up using the controls under the removable 
cover on the top. You could even adjust the caps, do one band and see if 
you hear the motors running.
I would look at the transmit problem as the tuner will do nothing but 
travel to a preset without RF applied.

Gary K8IZ



On 6/17/2011 5:31 AM, James R. Bartlett wrote:
> Hi Guys,
> A couple of problems have cropped up in my '761.
> The first one was it stopped switching into TX mode
> Then the Tuning stopped changing.
> I know these rigs are long in the tooth but they are still good.
> Anyone out there got any ideas before I start digging.
> Thanks in advance
> 73's
> JIm, Ei2BB
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-- 
Gary Fiber K8IZ
GROL PG-19-6691 with shipboard radar endorsement
Washington State resident