[ARC5] ARC5 Digest,

[Peter Gottlieb]

I had received a Syncal 2000 with bad LCD display.  There was corrosion where 
the zebra strips couldn't connect to the very thin conductive coating as it was 
eaten away.  No way to fix that.  But the rest of the radio worked fine, so I 
programmed an Arduino to act as an I2C bus slave to replace the existing LCD 
driver chips and then drove a graphics display to recreate the original display, 
except with a bit more information like battery voltage.  The project was a 
success, the radio looks great, better than the original, but was an enormous 
amount of work.

Peter
kb2vtl


On 6/19/2018 8:31 PM, Tim wrote:
> True - Obsolete LSI and ASIC part failures are bad enough (sometimes you can 
> design something around them) but real show-stoppers are those custom 
> LCD/Plasma type displays. Wheel chock.
>
> Tim
> N6CC
>
> On Tue, Jun 19, 2018 at 5:05 AM, Peter Gottlieb <kb2vtl at gmail.com 
> <mailto:kb2vtl at gmail.com>> wrote:
>
>     Many times the manufacturers outsource the PCB assembly and so even they
>     don’t stock replacement parts!  The best you can hope for is a replacement
>     board and the cost usually makes it uneconomical. This is especially true
>     of programmed parts.
>
>     I have repaired a number of such radios. Sometimes you get lucky and it’s
>     a cracked connection or standard part, other times your best bet is to
>     find a junker you can scavenge the board from.
>
>
>     Peter
>
>     > On Jun 19, 2018, at 1:17 AM, K5MYJ <macklinbob at gmail.com
>     <mailto:macklinbob at gmail.com>> wrote:
>     >
>     > And a lot of modern solid state stuff uses custom made silicon. You have
>     no documentation on it and no way to get a replacement.
>     >
>     > If it dies just trash it!
>     >
>     > Bob Macklin
>     > K5MYJ
>     > Seattle, Wa.
>     > "Real Radios Glow In The Dark"
>     > ----- Original Message ----- From: <w8au at sssnet.com
>     <mailto:w8au at sssnet.com>>
>     > To: <arc5 at mailman.qth.net <mailto:arc5 at mailman.qth.net>>
>     > Sent: Monday, June 18, 2018 2:30 PM
>     > Subject: Re: [ARC5] ARC5 Digest,
>     >
>     >
>     >> At 05:11 PM 6/18/2018, jbrannig wrote:
>     >>> Unless you use tube gear for CW contesting......
>     >>
>     >> And tube gear can be repaired for a long time to come since standard
>     parts are used.
>     >> Try to fix a solid state rig containing IC's produced for a specific
>     production or time frame
>     >> and you are out of luck.
>     >>
>     >>>
>     .................................................................................
>     >>> Mark D.  WW2RDO wrote:
>     >>> Bet you don't find a lot of vacuum tube gear still being used. If
>     vacuum tube stuff were easy to keep operating, everybody could do it.? The
>     latest, greatest wiz bag gear is easy to get and use if you have the money
>     to do it.? Where's the fun in that?? I feel sorry for the guys who don't
>     use the old gear.?
>     >>> Keep 'em glowing
>     >>
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