Hardware > Lynx Express

LE Trouble

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vairmoose:
the power for the chips and light is from the left power in.   if the digits are not displaying, check over the solder joints for the pic that is just to the right of the displays.  That pic is the display driver.  Ground is usually the culprit when not getting good connections...   follow the traces from the left neutral input...    touchup all the solderjoints  ...   i.e.  reflow them.   

Much easier to diagnose potential areas of difficulty when pictures are available.

Larry

davel295:
You are not allowed to view links. Register or Loginthe power for the chips and light is from the left power in.   if the digits are not displaying, check over the solder joints for the pic that is just to the right of the displays.  That pic is the display driver.  Ground is usually the culprit when not getting good connections...   follow the traces from the left neutral input...    touchup all the solderjoints  ...   i.e.  reflow them.   

Much easier to diagnose potential areas of difficulty when pictures are available.

Larry

--- End quote ---

Thanks, I'll give an update later today after I go get a new tip for soldering iron.


Davel295

rrowan:
Hi Davel295

The other thing to double check is make sure the 7-segment LEDs are in correctly. The decimal point (ie: dot) should be closer to the bottom end of the board (where the power input) and the chip for the display is also in correctly.

Rick R.

wbuehler:
If it has not already been suggested you might also want to check the big chip next to the segments.
This chip is the driver that controls the 3 segment displays.

Bill

davel295:
Thanks for everyones help. All orientations were good and I switched chips with another board and still had problems, so off I went to hardware store and just got back from there with new soldering tip and checked/resoldered just about every solder joint on the board. All seems to be good for now. Must have been a cold joint.

Thanks again for being helpful (and quick about it).

davel295

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