.02 mm pitch flex print PCB repair

Correction 0.2 mm pitch..

flexi

using

What are the end points of the ribbon ? eg 2 connectors or connector and glass ? and does it flex in use? is it microstrip/stripline in structure with a grounded backplane?

Fortunately there is no backplane, so I think we can get away with modified circuit. I will try to get a picture up on the internet soon.

The cable is directly connected to the glass on one end and has a standard .5 mm pitch *I think nothing to measure with at the moment* connector.

In the middle just after the tear there is a blob IC attached to the cable. The cable is then attached to an alunimum plate for security. I was thinking of taking advantage of this alunimum plate by using it as a surface to mount a zebra connector..

The cable is curled in a c like shape so I think briding the original connection is the more dfficult route. I think with a zebra connector and a pcb soldering the wires from the end connector to the pcb and the applying pressure to the zebra strip is a very viable solution. There is the perfect place to mount it on top of that aluminum plate.

Anyhow without pictures this is kind of hard to imagine. I will upload a few pics..

Thanks for the reply!

Mike

I wonder if there are any LCD displays using such small pitch connections which I could salavage a pcb and zebra strip from..

PSU.

modified

cable.

thinking

mount

perfect

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Anyone successfully salvaged that expensive 3M anistotrpic conductive tape? hot air , is that effective to dislodge the bond but not melt the tape/destroy the anisotropy? I just measured a standard size zebra and that had .2mm spacing, I could not find my tin of watch bits, what is the spacing on those zebras?

Thanks for looking. This project is on indefinate hold ATM. I live just outside Tokyo and you have probably heard the news about the earthquakes tsunamis and now the nucelar power plant meltdown.

I packed up and ran Monday night. I have moved to the other side of Japan leaving everythign I own except my car there.

My plans were to to wait till the weekend and see if they get this situation under control.

I expected that I would be going back to Tokyo this weekend, but I am starting to think that I will be buying a plane ticket back home to Florida.

As far as I can see the situation went from out of control but possibly managable to now I would say inevitable major nuclear disaster with a very good chance of exposure where at my apartment just outside Tokyo.

Thanks for looking into this.. Right now my concerns are on my friends in Tokyo who dont see the danger and arent leaving. They beleive what the government is saying that there is no danger. Many people couldnt believe I was leaving Tokyo for safety and wont listen to my reasoning to leave.

the

Florida.

Has it been reported in Japan whether the tsunami colder denser sea water displaced the water in the storage ponds ? Then what reaction occured with the sea water to end up combusting, and then they started using sea water on the other reactors. Or did the pond/s crack from the eaqrthquake and loose water?

Over here all they say everything is under control... The second time it blew up I was sure it wasnt under control. Once means it might be a mistake.. 2 times means nobody knows what they are doing or its just out of control.

They havent really been sharing the details but from what I can gather if they had got the frigging generator working none of this would have happened. Or flown another one in... Anyhow when I get some time I might make an OT topic on this.

Mike

They hope the ponds are not cracked.. but they arent sure. But they have no electricty to run the circulation pumps at the reactor or the storage ponds.. So it heats up and evaparates away.

The explosions were caused by hydrogen gas which is apparently produced when the coating on the fuel rods interact with oxygen. They got exposed to air therefore there was not enough water in the reactors.

Even shut down these things produce a lot of heat.

At the moment I am in a hotel room halfway across japan from where I was. Im going to rent a monthly parking space for my car tomorrow, and monday Im headed to the US to see how this turns out.. I hate to run away and leave all my friends here, but my family back home are freaking out and if I dont go I could end up stuck in a tight situation also..

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Whenever I've seen film of UK cooling ponds the water seems motionless so just relying on convection and heat radiating over a distributed water surface. Perhaps the Japanese ones have the fuel elements crowded more in a given volume of water and so requiring mechanically forced water flow over them