[1000mp] Problem 10 years old and under 2000 qso's

[Morris Wideman]

Hello
If you can disconnect J/P 1601 RF IN to the PA board and problem disappears then I  believe your radio some how is in TX. Try turning the RF power to Zero see if this has any effect. I would originally thought a leaking PA transistor but that would/should not be affected by the RF in/out coax`s. I have seen leaking PA transistors in two way radios and this drained vehicle battery due to fact they keep 12V on these at all times which appears to be same in the MP.
Best regards
WA4MIT 


--- On Thu, 3/26/09, Paraic Loughnane <ei7ir at eircom.net> wrote:

> From: Paraic Loughnane <ei7ir at eircom.net>
> Subject: [1000mp] Problem 10 years old and under 2000 qso's
> To: 1000mp at mailman.qth.net
> Date: Thursday, March 26, 2009, 8:15 PM
> Hello I hope someone can help I have a problem with my
> FT1000MP
> I have looked through a lot of the posts but cannot find
> same problem.
> Symptoms are as follows.
> On RX about 1 minute after power on the fan cuts in.
> I removed the top cover to find the heatsink gets very hot
> after a minute or so after power on.
> On RX and the  radio is connected to a dummy load i get
> s-meter readings from s1 to 60db
> on all bands except 160m.
> Keying the microphone will not give 100w out instantly it
> will "creep" from 0 to 100w in maybe 1 second
> Power out 12m  is 70 w & 10m is 50w other bands power
> is 100w.
> 
> After some information from a fellow ham which pointed
> towards the PA unit I investigated here is what i found out.
> Disconnecting either of the mini coax connections from the
> PA board results in a quiet receiver and it no longer
> overheats.
> Any help much appreciated
> 
> 73 Paraic EI7IR
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