[1000mp] MkV readout brightness

Thu, 12 Feb 2004 16:14:48 +0200

Here's a mod posted by KC3QL last year...

73, Esa oh7wv
-----Original Message-----
From: ext John SUGGS [mailto:[email protected]] 
Sent: 19. tammikuuta 2003 16:07
To: [email protected]
Subject: [1000mp] DISPLAY MOD FT1000MPMKV

If you would like to improve the brightness of the display this how you
can do it.  On the inverter board, there is an 18 OHM  1 Watt resister.
( R3502 ).  Replace this resister with either two 10 Ohm 1/2 Watt
resisters, in parallel, or one 5 Ohm 1 Watt resister.  The result will
be as follows..   Hi will be brighter, but not too bright.  A more
pleasant looking display.  DO NOT jumper the resister as you can cause
components to fail on the display board from over heating.  Note if you
use a single 1 watt resister, the leads will be too large for the holes,
suggest that you cut out the old resister and solder the new resister to
the leads.  Otherwise you will have to enlarge the holes.  The resisters
that I used were radioshack 10 ohm's. Which fit nicely..  Once the
display is warmed up I can now easily see it across the room as well in
sunlight conditions.  

TIPs:  If you ever have a problem with the display, check these items
first. A. R3502   B.  Fuse F3501  C.  Thermo fuse F3502.  D. Make sure
there is 13v at pin 2 of J3501, if not, the problem is on the display
board.

This should work on the MP  &  Field..  If some one has the schematics
copied of the field scanned into the computer,  please Email them to me
...... 

The original resister drops the 13V dc down to about 10V dc.  The new
resisters will only drop the voltage to about 12V dc....   There are NO
heating issues from this mod.  ONLY a much better display...

I make NO guarantee with this mod, do it at your own risk..  

73's   John KC3QL    [email protected]

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of John L Merrill
Sent: 12. helmikuuta 2004 13:51
To: 1000mp
Subject: [1000mp] MkV readout brightness

Is there a mod to change the brightness on the readout?

John N1JM
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