[ICOM] 2725 DISPLAY

[Simon Watt-Wyness]

Hi,
	Yes I agree with  the contact cleaning. One thing though, clean the pcb contacts with isopropyl alcohol but would only use a dry cloth on the siliconised rubber contacts. Have found in the past that the isopropyl will remove some of the carbon deposit as well, reducing the conductivity of the strip. LCD contacts don't seem to mind the isopropyl. That rubber bit is bits of carbonised rubber sandwiched amongst non conducting silicone rubber.
Yes it is quite delicate. Have had to do it several times on my Fluke 87.


Cheers,

Simon Zl1SWW


-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On Behalf Of Mike - 2007
Sent: Tuesday, 17 July 2007 3:21 p.m.
To: 'ICOM Reflector'
Subject: RE: [ICOM] 2725 DISPLAY


I have had a problem like that in a few older IC-901As, and some FLUKE DMMs
also.

The cure seems to be cleaning the LCD display contact points.

The LCD display (in my case) rests on a rubber contact strip.  The rubber
contact strip rests on the circuit board contacts.  Carefully dis-assemble
it all, clean it with alcohol, and carefully re-assemble it all.

It the rubber is stuck, DO NOT STRETCH IT by pulling on it.  Gently roll it
off sideways.

THANKS TO SCOTT MALCOLM of Malcolm Technical Support (mts at trip.net) for
suggesting the repairs and technique to me several months ago.

Good luck.

Mike - KD9KC.
M.A.R.I.E.
El Paso, Tx. 
www.w5dpd.org

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> -----Original Message-----
> From: icom-bounces at mailman.qth.net 
> [mailto:icom-bounces at mailman.qth.net] On Behalf Of Bill NY9H
> Sent: Monday, July 16, 2007 8:49 PM
> To: ICOM Reflector
> Subject: Re: [ICOM] 2725 DISPLAY
> 
> when i turn on my 2725...  I have extra segments "turned on" 
> til it warms up for a while. After a few minutes all is fine  
> ....  what is that about ???
> almost like it is cold,
> 
> my room is about 75F....  so it happens even with room temps.
> bill
> 
> ----
> Your Moderator: Dick Flanagan K7VC, 
> icom-owner at mailman.qth.net Icom Users Net: Sundays, 1700Z, 
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----
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