LCD readout - broken ? or bad joints - Page 2

Mooly · 30th August 2008, 11:14 AM

Looks slightly like a Philips display module. Does it have an IC built into the board which looks like a "blob" of black epoxy. The Philips ones were well known for failure but the ones I worked on were green.

metaxus · 30th August 2008, 02:58 PM

Quote:

Originally posted by Mooly
Looks slightly like a Philips display module. Does it have an IC built into the board which looks like a "blob" of black epoxy. The Philips ones were well known for failure but the ones I worked on were green.

I agree... Looks identical to the Philips modules.

I just repaired the display on a newly acquired CD202 tonight by flowing solder through all the vias.

Went from having 5 working segments out of 32 to 29 working out of 32 (the missing ones were on the first digit, which always shows "0" anyway)... Not perfect, but a far better result than when I first got it.

Mooly · 30th August 2008, 04:13 PM

Hi,
Had a look in the junk box, the one I was thinking of was similar but different -- usual story. Post a piccy in a mo.

Mooly · 30th August 2008, 04:18 PM

From a CD150 I think ?

3Dgeek · 30th August 2008, 10:12 PM

Quote:

Originally posted by Mooly
Looks slightly like a Philips display module. Does it have an IC built into the board which looks like a "blob" of black epoxy. The Philips ones were well known for failure but the ones I worked on were green.

Yeah, on the back of the pcb, the pin spacing is a bit different to the one shown, but i guess that might not matter, here is an image of the pin positions -

metaxus · 31st August 2008, 01:13 AM

Check your emails Mooly

3Dgeek · 31st October 2008, 10:56 AM

Still no word from the krell dealer.

Picked up a few led's off ebay which are newer types and have more pins, i don't know if these will even work, although i have had a few segments lit up, without the datasheet for the original units i really don't have a clue....

Reuben

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30th August 2008, 11:14 AM	#11
Mooly diyAudio Member Join Date: Sep 2007	Looks slightly like a Philips display module. Does it have an IC built into the board which looks like a "blob" of black epoxy. The Philips ones were well known for failure but the ones I worked on were green.

30th August 2008, 04:13 PM	#13
Mooly diyAudio Member Join Date: Sep 2007	Hi, Had a look in the junk box, the one I was thinking of was similar but different -- usual story. Post a piccy in a mo.

31st August 2008, 01:13 AM	#16
metaxus diyAudio Member Join Date: Sep 2004 Location: Melbourne, Australia	Check your emails Mooly

31st October 2008, 10:56 AM	#17
3Dgeek diyAudio Member Join Date: Nov 2005	Still no word from the krell dealer. Picked up a few led's off ebay which are newer types and have more pins, i don't know if these will even work, although i have had a few segments lit up, without the datasheet for the original units i really don't have a clue.... Reuben

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