[Kenwood] TS950SDX dead

[Peter Ravn]

Due to the expert knowledge and exceptional helpfulness of YO9FZS (Traian) 
and N1GPT (Bill) I finally succeeded in tracing down the source of a dead 
transceiver with a blank frequency display: the SO-1 switch on the CAR board 
was midway between its two positions. Because of that the PLL unit had no 
reference signal. As they say, little strokes feel great oaks.

Once again thanks a lot to all of you for your answers. Nice to be on the 
air again.

73 de Peter

----- Original Message ----- 
From: "Peter Ravn" <fasan5 at privat.dk>
To: <n2ic at arrl.net>; <kenwood at mailman.qth.net>
Sent: Saturday, April 21, 2012 3:06 PM
Subject: Re: [Kenwood] TS950SDX dead


> Hi Steve
> The DSP is plugged in, and the sub RX is dead as well. I told the workshop
> to test the repair with an ohmmmeter, which I suppose they did. However,
> this needs to be confirmed.
> 73 de Peter
>
> ----- Original Message ----- 
> From: "Steve London" <n2icarrl at gmail.com>
> To: <kenwood at mailman.qth.net>
> Sent: Saturday, April 21, 2012 2:24 PM
> Subject: Re: [Kenwood] TS950SDX dead
>
>
>> Make sure the DSP unit (the unit that hangs from the bottom) is plugged
>> in, and
>> there is no intermittency in the connector that plugs the DSP unit into
>> the rest
>> of the radio. The way to check for this is to switch to the sub RX. If 
>> the
>> sub
>> RX works, than the DSP unit has a bad wire in the connector.
>>
>> Without the rest of the radio, did the workshop have any way to test 
>> their
>> CP1-CP4 repair ?
>>
>> 73,
>> Steve, N2IC
>> former long-time TS-950SDX owner (x2)
>>
>> On 04/21/2012 04:57 AM, Peter Ravn wrote:
>>> Due to the well known problem with intermittent audio distortion on
>>> transmit
>>> I pulled out the PLL unit and sent it a Kenwood workshop to have CP1-CP4
>>> resoldered. The soldering job was well done, but the radio has gone dead
>>> after the reinstallation of the PLL unit. There is 15/5 V on CN5 and all
>>> connectors and pins are okay. So what to look for?
>>>
>>> Lights are on when I turn on the radio. When I turn it off the final fan
>>> is
>>> activated as it should. But the display doesn't show frequency, and 
>>> there
>>> is
>>> no audio on receive. Only a slight hum is heard in the earphones.
>>>
>>> The transmitter is totally dead when keyed. The ATU works when I switch
>>> bands.
>>>
>>> The menu works, and so do all push buttons when engaged. Only the AF/RF
>>> control is dead.
>>>
>>> Hopefully this will give you an idea, gentlemen, what to suspect.
>>>
>>> 73 de Peter OZ8CTH
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