[Kenwood] Problem with TS940 - 455kHz narrow filter problem
Clif
Clif" <[email protected]
2002年4月29日 09:43:44 -0500
I meant to say thru the filter board to the diodes, not the filter.
Clif Holland, KA5IPF
AVVid
Authorized Kenwood and Icom Amateur Service
www.avvid.com
1-800-214-5779
----- Original Message -----
From: "Clif" <[email protected]>
To: "Paul B. Peters, VE7AVV" <[email protected]>; <[email protected]>
Sent: Monday, April 29, 2002 9:25 AM
Subject: Re: [Kenwood] Problem with TS940 - 455kHz narrow filter problem
> You probably have a broken trace on the filter itself. The voltage is
routed
> thru the filter to the diodes.
>> Clif Holland, KA5IPF
> AVVid
> Authorized Kenwood and Icom Amateur Service
> www.avvid.com
> 1-800-214-5779
>>> ----- Original Message -----
> From: "Paul B. Peters, VE7AVV" <[email protected]>
> To: <[email protected]>
> Sent: Sunday, April 28, 2002 10:56 PM
> Subject: [Kenwood] Problem with TS940 - 455kHz narrow filter problem
>>> > Problem developed with 940 in that when switching to the narrow filter
> > position audio drops out completely. The narrow filter in the 8830 kHz
> > position is working fine as evidence by the fact that if 455 if removed
> and
> > jumper replaced. Audio functions ok in arrow filter position. With the
455
> > in place and the narrow filter in the narrow position normal voltages
> appear
> > on the filter itself. However the voltages at D27 and D34 are 0 on both
> > sides of the diode. It would appear to be a diode reverse bias supply
> > problem, but I am having trouble tracking it down -- any suggestion
would
> be
> > greatly appreciated.
> >
> > 73 de Paul, VE7AVV
> > StoneyGround Station
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