[Yaesu] Request for opinions-Yaesu Repair

Sun, 20 Jan 2002 18:30:45 -0800

Gary,

Will do.
If you look at the schematic, three 3 critical regulators are
+5, +8 and -7.x. These are the ones I am working with.
The 'raw' source of 12 V. is from the switching power supply.
Unfortunately, with the switcher a crowbar may not work very
reliably and fast. In my approach, I am sensing the three voltage.
If any foes up by approximately 15%, the series high speed switch
at the input will open and remain open till the radio is shut. The
protection circuit will be good for up to 30 V at the input.
Once the over voltage is activated, an LED will be turned on to
show which one is at fault. Since the LED will be on the circuit
board and you can not see it, there will be a small beeper to let
you that over voltage has occurred and you need to open the cover.
One can  move the LED to the outside.

Gary, please give me your direct email so that it will be in my address
and I will keep you informed.

Mine is:  [email protected]
I live in Los Angeles.

73,

Mort, KB6BSN

----- Original Message -----
From: "W2WU" <[email protected]>
To: <[email protected]>
Sent: Sunday, January 20, 2002 9:10 PM
Subject: Re: [Yaesu] Request for opinions-Yaesu Repair

> Mort:
> Amen. Honey works better than salt.  Salt leaves scars.
>
> Please keep me posted on the over voltage design.  I have the same rig.
> Note: play safe, use a surge strip w/ pwr switch.  Why? (1) The proximity
of
> the Power & MOX Switches.  No antenna connected = fried drivers / finals,
> (2) Projected cost / labor or availability of the Power Switch. 73 W2WU
> ----- Original Message -----
> From: Mort Arditti <[email protected]>
> To: <[email protected]>
> Sent: 20 January, 2002 17:48
> Subject: Re: [Yaesu] Request for opinions-Yaesu Repair
>
>
> > Gary,
> >
> > You are correct. All big three, including Alinco have lousy
> > service.
> > However, there is not reason why we the buyers should not
> > put the pressure on the management.
> >
> > Yaesu makes very good radio, and the repair rate is probably
> > low. However, our $ is what keep the amateur division of the
> > these companies in business. We pay top $ for the product and
> > service. We are entitled better service.
> >
> > I fully believe to first try the nice way. But, it does not work,
> > the 'big stick' may be the answer. If accept the crappy service
> > and they get away with it, why would they change.
> >
> > The 'big stick' has worked for me many times.  In my case it
> > was writing to the President, CEO, GM or whoever is at the
> > top.
> >
> > By the way Gary. Another pet peeve with me is the penny pinching
> > of the design. On several Kenwood and Yaesu (no experience with
> > Icom) radios, the voltage regulators do not have over voltage
> > protection. When a $1.00  5V fails short, you may be looking at
> > several hundred $ repair bill. Why don't they include this simple
> > function as part of the product?
> > My FT 1000 has at  least three such regulators (main ones). I hate
> > to think what will happen if one of the shorts. Now that the radio
> > is out of warranty, I am designing the over voltage protector and will
> > add it to the radio. The line fuse will protect the radio.
> >
> > Anyhow, this is my view.
> >
> > Best to you and thanks for taking the time.
> >
> > 73,
> >
> > Mort
> > ----- Original Message -----
> > From: "Gary Johnston" <[email protected]>
> > To: <[email protected]>
> > Sent: Sunday, January 20, 2002 5:22 PM
> > Subject: Re: [Yaesu] Request for opinions-Yaesu Repair
> >
> >
> > > Well I think Mort, KB6BSN is getting carried away as both Icom and
> Kenwood
> > > suffers the same problems and in some cases worse.
> > >
> > > Try to buy parts from Icom for older radios, in many cases they are
not
> > > available.  Since Kenwood out sources their service under their name,
> the
> > > techs never knew what ham radio was until they got a job fixing them.
> > >
> > > I had two Icom 706's ..one original and one mark and the noise blanker
> on
> > > both of them was terrible for HF Mobile.
> > > Saw and played with the FT-100 in Tokyo on a business trip, came home
> and
> > > sold my 706 and waited for the FT-100.
> > > I made sure 2m/440 worked but use separate radio.
> > >
> > > Bottom line is the grass is not greener on the other side!
> > >
> > > Gary-K5QFB
> > > Ponder, TX
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > Yaesu mailing list
> > > [email protected]
> > > http://mailman.qth.net/mailman/listinfo/yaesu
> > >
> >
> > _______________________________________________
> > Yaesu mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/yaesu
>
>
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