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LP-100 Display Replacement Options
Updated 6 June 2011

Important note about display replacement options:

Some of the PLED displays which were supplied with the original LP-100 are experiencing failures after several years. The display starts to lose lines or just goes dark. This does not seem to be related to hours of use as much as it is to age. In fact, the less the meter is used, the more likely a failure. The display on the first LP-100, still in daily use at N8LP, looks perfect after over 5 years of 24/7 operation. The culprit is something called "tin whiskers", which are microscopic lines that grow between circuit traces and eventually short them out. Tin whiskers are much more prevalent with lead-free solder, especially formulations that were being used when the EU's RoHS (Reduction of Hazardous Substances) directive was first mandated by the EC in Europe, which is when the PLED displays were manufactured. This is why mission critical applications like space, military and medical are exempted.

The PLED displays originally supplied with the LP-100 are no longer available. This page details the options which are available for replacement of displays for the original LP-100. We recommend the following two options. The OLED option for easiest replacement, lowest cost and the same look and performance as the original PLED. The GVFD option allows the user to essentially upgrade to an LP-100A electrically, and offers the added resolution and continuous look of the graphic bargraphs.

OLED

These displays are plugin replacements for the original PLED, using the original hardware and connector. For proper display of the last segment of the bargraphs, new firmware must be flashed into the meter. This is due to the different way in which the cursors are implemented in the displays. A menu item has been added to v1.1.8.0 which allows selection of display type... PLED, VFD and OLED. This firmware is available on the LP-100 Current Software page at http://www.telepostinc.com/LP-100-Update.html.

The displays are
available in both green and yellow versions, with more colors to follow. Lifetime is specified as 50,000 hours based on accelerated testing, which rivals VFD, theoretically. Here is a picture of the yellow version...



The installation manual for the OLED displays is located here...

OLED_Manual.pdf
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Pricing and Ordering for US customers...

The OLED displays cost $25 each plus shipping ($2 for 1st Class, $5 for Priority Mail). 

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Select color and shipping choice
.

Color / Shipping
Add a note...
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Pricing and Ordering for overseas customers...

NOTICE: 1st Class Airmail and Priority Mail shipping of these small packages is NOT insured. 1st Class shipping to Canada / Mexico is $4USD, oustide North America $8USD.  Priority Mail shipping to Canada / Mexico is $8USD, oustide North America $13USD. 
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Select color, shipping and region choice
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Color / Shipping / Region
Add a note...
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Graphic VFD
The GVFD display is the same as the one used in the LP-100A. This is a very high quality display and offers better bargraph resolution, added features and display longevity which should last the life of the meter. This option requires adding a daughtercard to the LP-100, as explained below. The option upgrades your meter to LP-100A, electrically. The cost for this option varies from $75 for a kit to $110 for factory upgrade with return shipping (US only). More details are listed below.

GVFD Display Upgrade kit for LP-100:



GVFD (Graphic Vacuum Fluorescent Display) kits and assembled units are available for upgrading the display in LP-100 to the same one that's used in the LP-100A. The upgrade also allows the user to run the current firmware for LP-100A. It is also the best option for replacing a failing display on an older LP-100.


The kit includes...

GVFD display
Anti-glare neutral density filter
Daughtercard PCB
Dedicated microprocessor for display
1uF cap
10uF cap
10K resistor

Sockets and headers
Ribbon cable
Larger heat sink
Additional mounting hardware


Overview...

The daughtercard contains a second micro-controller for the display, and some connectors. To install, the micro-controller on the LP-100 PCB is removed, and inserted into the large socket on the daughtercard. The daughtercard is then plugged into the main PCB using the original micro-controller and display sockets. New LP-100A firmware must be flash programmed into the micro-controller to allow use of the new display. A larger heat sink is also required since the GVFD display draws much more current than the original PLED.

The assembly/installation manual can be found here... 
GVFD Upgrade Manual

Units can be ordered anytime by sending us an email for payment instructions.

Pricing is as follows for domestic customers...

Display upgrade kit for user installation (includes shipping)... $75. 
Note: User is required to flash new firmware into his LP-100 to enable the new display.

Display upgrade with assembled daughtercard for user installation (includes shipping)... $90.
Note: User is required to flash new firmware into his LP-100 to enable the new display.

Factory installation of display upgrade (includes calibration check and return shipping)... $110. This option requires that the user return the meter, coupler and connecting cables.

Pricing is as follows for overseas customers...

Display upgrade kit for user installation... $70USD plus shipping. 
Note: User is required to flash new firmware into his LP-100 to enable the new display.
 
Display upgrade kit with assembled daughtercard for user installation... $85USD plus shipping. Note: User is required to flash new firmware into his LP-100 to enable the new display.
 
Factory installation of display upgrade (includes calibration check)... $95USD plus return shipping. 
This option requires that the user return the meter, coupler and connecting cables if calibration check is desired.

Shipping options. Due to recent problems with overseas deliveries, we now offer only USPS Express Mail shipping... 5 days, insured, trackable online at www.usps.com.

Canada, Mexico: $25USD
Europe:
$28USD
Asia: $27USD

FEDEX also available at higher cost.


Email us for payment instructions.


73,
Larry N8LP

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