[ICOM] Original 706 no HF output

[Michael P. Olbrisch]

> -----Original Message-----
> From: icom-bounces at mailman.qth.net
> [mailto:icom-bounces at mailman.qth.net]On Behalf Of D & M Pendergast
> Sent: Monday, January 17, 2005 11:58 AM
> To: ICOM Reflector
> Subject: Re: [ICOM] Original 706 no HF output
>
>
> Hello again,
>
> Further to my earlier posting I discovered that RL 6 in the
> filter board was not switching on.  Cause - blown protection
> diode.  Removed the diode and now full power has restored
> with no damage to the driver transistor.

Congratulations.  I was not going to reply to this at all, leaving for work
in minutes.  But I did want to tell you well-done, not many will dig into
their radios anymore.  I am one of the few in this town - and I have all the
work I can handle.  Got so I refused to touch the Y of K brands, still not
enough time.  So be careful who you tell about your repair successes
locally.  <grin>

> A circuit diagram would have helped but managed without
> it.  Hard bit now is fitting the replacement one!

I have downloaded and printed many service manuals.  I am not sure if I have
the 706MK-I manual.  No time to check right now either.  I do have a MK-I
though.

Again, good bit of troubleshooting.  Well - getting over a cold here, but it
is off to the power plant for me.

Mike.  KD9KC
El Paso, TX.