[ICOM] R71A Problems

[Gary H. Harmon, Jr.]

See comments below.

Gary H. Harmon, Jr. - K5JWK
6003 Archwood
San Antonio, TX 78239-1504
210.657.1549h / 210.884.6926c

"Retirement means every day is a Saturday except Sunday"



-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Gary P. Fiber
Sent: Friday, April 08, 2011 11:22 AM
To: ICOM Reflector
Subject: Re: [ICOM] R71A Problems

Sounds like the ram programming is gone. The battery of around 3 VDC keeps
the ram alive.  Another thing to check for a cracked solder joints around
the connectors on the ram unit.

Did the R-71A work, show correct frequencies before you replaced the
battery?  NO
Did you measure the battery voltage while it was still attached to the ram
unit? Was it at the 0.3 volts DC you mentioned it was at when you removed
it?  YES and now it reads 3 volts.

There are replacement ram units available, mostly a eeprom these days. I am
unsure if Icom still can reprogram those ram units, you could contact them
also.


Gary K8IZ

On 4/8/2011 9:08 AM, Gary H. Harmon, Jr. wrote:
> I have a friend's R71A on the bench and before I get too crazy I 
> thought I would check the list.  I replaced the battery IAW instructions
on the web.
> The removed battery measured 0.3 volts.  It comes on with a frequency 
> display of either 466.666.6 or 666.666.6.  There is a little hum in 
> the speaker but no rushing noise.
>
>
>
> Are there any other obvious issues to check?  Is there a service 
> manual available online?
>
>
>
> Vr,
>
>
>
> Gary H. Harmon, Jr. - K5JWK
>
> 6003 Archwood
>
> San Antonio, TX 78239-1504
>
> 210.657.1549h / 210.884.6926c
>
>
>
> "Retirement means every day is a Saturday except Sunday"
>
>
>
>
>
> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net Icom 
> Users Net: Sundays, 1700Z, 14.316 MHz Icom FAQ: 
> http://www.qsl.net/icom/ To support QSL/QTH.net: 
> http://www.qsl.net/donate.html
>


--
Gary P. Fiber K8IZ

General Radio Telephone Operators License PG-19-6691, with Shipboard Radar
Endorsement.
Washington State Resident.

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----
Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net Icom Users
Net: Sundays, 1700Z, 14.316 MHz Icom FAQ: http://www.qsl.net/icom/ To
support QSL/QTH.net: http://www.qsl.net/donate.html