[1000mp] AW: ft 1000mp mark v RX intermittent

[Uwe Fleischer]

Congrats Leslie,

and thank you for sharing your experience with us. If one of us runs into
trouble some day, that might encourage him, to roll up his sleeves and start
tackling the problem.

Maybe I've already written that here: I started a business on my own, when I
was still studying. I repaired far over 1,000 computers and over 500
peripheral devices. It was this time, when you didn't simply change some
boards, but you still tried to find out the defective chip and changed it by
soldering out the old one and inserting a new one.
Since these days I'm deeply convinced, that 


A HAIRDRYER AND A TIN OF COOLING SPRAY ARE THE MOST EFFECTIVE TOOLS


when you face this kind of ugly, intermittent problems.


Have a good time altogether,

73 de Uwe, DL8UF



-----Ursprüngliche Nachricht-----
Von: 1000mp-bounces at mailman.qth.net [mailto:1000mp-bounces at mailman.qth.net]
Im Auftrag von leslie
Gesendet: Donnerstag, 10. April 2008 20:16
An: 1000mp at mailman.qth.net
Betreff: ft 1000mp mark v RX intermittent 

Hi all

Back along I posted looking for help on an intermittent problem with RX in
the main receiver, the transceiver would go completely deaf on all bands
except sub receiver. The rig would come back to life with a tap on the
casing, thinking it must be a dry solder joint or relay it has taken this
long to find the source of the problem. last night armed with a hairdryer I
took off the top cover of the rig, lifted out the tuner casing  put it aside
of the rig all still wired to and connected to the rig. I powered up the rig
connected it to the antenna and turned on the hairdryer to put some nice
warm air into the rig not to hot of course and within 30 seconds no

RX. I picked up the tuner unit and gave it a little tap still no RX. I then
gave the cover plate over the vco board a little tap and the rig was
receiving again. I took out the board and found that the crystal x4001
62-237mhz had a bad solder joint. Re-soldered and all is fb now.

 

Cheers

Leslie

EI5GJB          

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