[1000mp] 1000MP Problem -- more info abot the problem

[Dave Meitzen]

 Scope ed the ref oscillator - good
9V feeds the subreceiver also - I look at the schematic -- good - was easer
to get to :>))

When I turn the main knob I hear a scratching sound from the speaker also
get microphonics when I move the unit.

FYI
Dave


-----Original Message-----
From: 1000mp-bounces at mailman.qth.net [mailto:1000mp-bounces at mailman.qth.net]
On Behalf Of Scott Manthe
Sent: Saturday, June 24, 2006 5:08 PM
To: All about Yaesu 1000mp
Subject: [1000mp] Re: 1000MP Problem

Dave,
It sounds like the PLL is unlocking. If it has the TXCO, you might try
reseating it on its mounting pins. If it doesn't, try reseating the
reference unit on its mounting pins. 

If that does work, I fear you might have a slightly more serious problem-
you might check to see if the 9 volt regulator has died. 

I did a little research and came across this from the CQ-Contest reflector-
the author is Doug, VE5RA, responding to a similar question from W9WI: 

>This is a 'common' problem with a 1000MP.
>The 9 volt regulator has died. 
>
>The voltage regulators are found on the REG-UNIT circuit board.  This
>board is accessed from the top of the transceiver.  The power unit, blower
>and support frame have to be removed to get at the circuit board. The
>output voltage of the regulator can be checked at plug J9015 pin 3 and
>should read close to 9 volts with of course power on. 
>
>The faulty 9 volt L7809 Q9002 all plastic isolated regulator can be 
>easily removed after removing an adjacent circuit board shield and 
>lifting the REG-UNIT circuit board edgewise to access the 3 pins of the 
>voltage regulator.

I hope you get the rig up and running again, one way or another. 

73,
Scott 

Dave Meitzen writes: 

> I recently bought a 1000mp and immediately installed the Inrad roofing 
> filter and some filters (before I tested the radio - dumb) I power up 
> the radio and the main frequency display displays 7285 and blinks of 
> and on. The audio is a slight hiss. I set the menu items without a 
> problem. Remember this is my first MP so could it be a set up issue?
> 
> Thanks for taking the time.
> Best Regards
> Dave
> 
> 
 

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