Bleeding display...

[MenosCuarto]

I would to ask something. It's the milion dollars question. There is some procedure to repair a bleeding display? Some old displays are very delicate, it's enough to dismount the display (carefully, of course), and "blood" appears inmediatly . It's posible repair it, or you have to start searching of a donor?

[767Geoff]

In a word, donor

[MenosCuarto]

Thanks for your answer. In few words, I was affraid. Searching starts...

[simone]

a donor or a Nos one...

[MenosCuarto]

I think that find a donor will be no easy work. So find a NOS unit, will be like to find a treasure.....
And here is the next problem. The watch is a 0634-5009, from '75. The display started to bleed when I tried to dismount the spring was over the display. I think I didn't any bad movement. If hace a donor and I try to dismount the display..... How avoid the same damage again?

[767Geoff]

New old stock may be difficult. Donor would be easier, these are not that rare.


There are eight currently on eBay. One with the a bad polarizer for $35. Nice strap, case and maybe a new polarizer film on the front will fix it.

The panels are pretty robust and yours might have been waiting to separate due to decomposed bonding material between the two panels. I have yet to have the bleed happen on one of my repairs, but it will I am sure.

Good luck!

[MenosCuarto]

Thank you for your complete answer, 767Geoff. I found it very interesting. I'm not sure to understand last phrase. When you says "one of my repairs...", you says about repairing the display or about mounting a display of a donor?. I think it must to be second option, because first would be... amazing. But I'm ready to accept everything in this forum

I just come to read again your first answer, and you said "donor".... so it's clear. About this, someten tried to separate two panels to renew glue? I know it must to sound mad, but If you hace a display completely damaged, you have nothing to loose.

[Seiko Kid]

The 0634 is very difficult sometimes to remove the LCD because the retaining spring is under a lot of tension ( for what it needs to do ) , compared with the 0624 ( where the spring almost falls off ) it requires a little more skill than imagined.

It is common to damage 0634 lcd when removing unless you have lots of experience - I know this from my own experience !

NOS lcd, I think now is not possible to find anymore. Most used working watches on ebay carry good lcds inside, some of course are tired and faulty

[MenosCuarto]

Hi, Seiko Kid. Nice to meet you :). Thanks for sharing your experience.

What you say about dismounting the spring of 0634 is true. A watchmaker friend of mine gave me two units to mount one running watch. I opened first one, anda when I touched carefully the spring.... disaster. Not possible, I thought. I did no force. So the , watchmaker opened the second one. He's a very experienced watchmaker, and second disaster occurs, on the same way. I think the glue is in bad condición after 40 years, and it's enough a light contact to bleeding appears. I think is not possible to dismount the spring if the glue is in bad condition. And it's no way to know it before.

[Seiko Kid]

like I explained - you need experience then it doesn't happen

[767Geoff]

Hola Menos,

Too make it very clear, dismount the WHOLE panel from the donor watch and mount the panel on the target watch. I have done 5 of these successfully.

Check out this link:

http://www.madehow.com/Volume-1/Liquid-Crystal-Display-LCD.html

Geoff

[MenosCuarto]

Thanks again to you, I'm learning a lot from your experiencies. Thanks Geoff, I'm going to readaptación this link carefully.
Seiko Kid, I know I have no experience in this work. The first I think when I saw bleeding appears is this. But when an experienced watchmaker obtains the same result, I think the problem is bigger. I can be wrong, but ...

[Seiko Kid]

I have had to repair an 0674 my friend took to an experienced watchmaker who broke the circuit board and damaged the LCD with exactly the same issues you are having ...