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26fb010 Profile
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Accomplished DX-er

Registered: 01-2009
Location: BLACK COUNTRY
Posts: 574
Karma: 3 (+3/-0)
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KENWOOD TS440S dots on display


its a common problem that every 440 will suffer from.
all the nasty glue that causes the dots has been removed, so i can discount that............
anyway on first start up (cold) the dots are present between 14.500 and 22.000 mhz only, laeve it warm up for 20 mins and they go, all good then? NO, because when the rig has been on for a hour or so, the dots come back??
Any ideas anyone?
22/Feb/2013, 12:08 pm Link to this post Send Email to 26fb010   Send PM to 26fb010
 
19FB575 Profile
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Freebander

Registered: 07-2013
Location: The Netherlands
Posts: 103
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Re: KENWOOD TS440S dots on display


When you are looking on google there is a lot of info. I Think you must also replace some parts.


Google on ts 440 dots problem..


73´Pascal



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19FB575 Pascal


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4/Jan/2014, 2:35 pm Link to this post Send Email to 19FB575   Send PM to 19FB575
 
108xx002 Profile
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New Kid On The Block

Registered: 07-2016
Posts: 2
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Re: KENWOOD TS440S dots on display


VCO/PLL unlock scenario, quite common in older Kenwoods, try adjusting PLL/VCO adjustment as per manual for (I think) 6vdc.
But this is a short term fix, the caps used are old and need replacing.

Hope this helps
24/Jul/2016, 12:42 pm Link to this post Send Email to 108xx002   Send PM to 108xx002 Blog
 


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