Need help with type of LCD

Discussion in 'General Electronics Chat' started by chief472, Jun 10, 2013.

  1. chief472

    Thread Starter New Member

    Feb 25, 2013
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    I need help with the LCD in the attached picture. There is no numbers at all on the LCD. This board is off of a pool heater control and the LCD is gone. The board name is Raypak RP2100 RP 2.1 P/N 601588 The board is 24vac. The board itself is good but I need to replace the LCD. All I can tell you about the LCD itself is that it is 51mm x 30mm and it has 25 pins (13/12) with a backlight under it. I have looked on Mouser Electronics but can't find the correct LCD. Any and all help will be appreciated.
     
  2. ErnieM

    AAC Fanatic!

    Apr 24, 2011
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    Many of these displays are very custom to the specific item. One way to tell is if there is any symbol besides the seven segments for a number or a decimal point.

    Anything else... it's custom and probably not available.
     
  3. LDC3

    Active Member

    Apr 27, 2013
    920
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    Considering the number of leads, it might be a graphical display. Can you tell us what images the LCD displayed?
     
  4. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    Looks a bit like one of the old 3&1/2 digit LCDs;

    [​IMG]

    but with less pins so yours might be a 2 digit or 2&1/2 digit one.

    They have no inbuilt driver IC, there is one pin for each segment, and a number of "common" pins.
     
  5. chief472

    Thread Starter New Member

    Feb 25, 2013
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    I know there was a symbol or picture of a flame when the heater was in operation. So, it is more than just numbers.
     
  6. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    Ah, well then it's a specialty device and you'll never find one unless you can get a direct replacement from another PCB or from the pool heater manufacturer. Normally they get custom displays made in X quantity, to suit their own product, and use them for batch manufacturing.

    There's very little chance those displays would be available elsewhere.
     
  7. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    Can you trace the pins back to the driver ic what number is on it, the display is probably an Alpha numeric type with symbols, specific made.
     
    Last edited: Jun 12, 2013
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