Witch idea exactly?

This will work: [Link: cgi.ebay.nl]

Buy a Philips Nino in e-bay, same screen and is cheaper than the one above.

My tsu3000 is approx 3 years old.... some of the hard buttons started being un reliable.. then it started to lose calibration... or would get out of sync with the calibration with days until today it stopped working completely (the touch screen, hard buttons ok).

I read this thread, and as indicated on post 230... if you open it up and do as he says, it does fix the problem. I would say that one of my contacts was off, but I did the pin trick on all four contacts and now it works.

While it was open, I gave it a good cleaning and now all the hard buttons work (cleaned the hard button contacts on the board.

So if your touchscreen is frozen, this is a really easy fix.. took 15 minutes.

Thanks

Foo

I'm in the UK. I bought my TSU3000 from a US seller on Ebay about 2 years ago. Last week, the touchscreen failed one night, started working the day after. Then last night, went again and this morning came back out of calibration.

Read this forum, tried the cleaning and flexi rubbing - no sign of life. Just about to give up then read on to find the pin technique - worked first time.

We have dealings with touchscreens like this here where I work (in one of our products). We never realised until now that the conductive layer of these screens isn't just one piece, i.e. the flexi tail is separate and attached to the screen afterwards.

It seems that over time the surface of this join decays and stabbing the area with a pin disturbs the 2 layers enough to renew the contacts.

Chances are this will happen again, but for anyone attempting it, you just need open the case. You can leave the touch screen assembly attached to the main circuit board. The area to prod the flexi is on the top surface of the screen before it turns 90 degrees and disappears down under the screen.

The pin fix worked for me, but I used a tiny screw driver edge to push down on the ribbon connections to the glass at the top of the screen......it took me a minute to find the sweet spot........I just kept tapping the glass and pushing down on the connections until it started working again.... It works perfectly now.

I almost bought a new battery lol.......thanks for the help guys!

Oh mines a 3000 as well, just in case Philips wanted to know.


You DONT need to desolder the screen and remove it.......its the ONLY ribbon that is glued to the top front of the glass screen....the one that connects to strips running around the touch screen....just take a tiny flat head and push down on each part of the strip where it connects to the glass. Not the ribbon that goes under the glass......its the ribbon that is glued right to the glass at the top right of the screen.

Give it some pressure with the tiny flat head sharp edge against each connection on the glass....pushing it against the glass. The bad connection is in there...

Just for try you can press with your nail one of the 4 contacts at a time and try in real time the touchscreen.
In my case it was the third one startind from the right which was not giving a good contact.
The niddle fixed the problem (for the moment).

Bye

miazza

The iPAQ 1945 digitizer (touchscreen) fix is the best solution to the Philips Pronto TSU3000 touchscreen problem. If you can't handle the soldering send it to this guy I used to fix four of them so far. He's in Broolkyn, NY. I got the parts on eBay and I brought them with the broken remote to him. It cost me $30 for this guy to solder it. He said he would accept shipments, so if you want to send it to him go ahead. Call and find out what payment he takes and how he'd ship it back. Acme Video & Audio 1810 Flatbush Ave, Brooklyn, NY 11210 - 718.338.1000. I was just going to take the information I learned here, in this forum and not give anything back, but I felt very compelled to express this to everyone who wants their Pronto fixed, so I hope my post doesn't get removed because it looks like an ad.

Well I think you should thank me since I'm the one that discovered the compability. I went to an Ipaq fix shop and take a lot of ipaq parts and tested one by one. Please donate to [email protected]. :-)

But I have to say you wrong about changing the touchscreen is the best way for the unreponsiveness, there is a cheaper way (since you can do a lot of remotes), that is to use a silver based epoxy and replace the ribon of the screen with wire.

The 1900's replacment I now use only for broken touchscreen.

Fyi, perhaps this is already known, but I just encountered the tsu3000 touchscreen freeze problem after my aftermarket battery pack overheated in the recharging cradle. The pack got so hot, it was almost too hot to touch. I'm not sure why the pack overheated (anyone have any ideas??), but after it did, the screen became unresponsive. Using the needle fix described in post 230, I was able to get the screen to "unfreeze" for a little while, which makes me think that the overheating caused the contacts to expand.

Fortunately for me, a local Tweeter had a used tsu3000 for sale for $38.00 (yes, $38.00!!), so I'm up and running with a "new" pronto, but the experience does appear to indicate that heat may be one reason for tsu3000 screen freezing.

Anyone know if the tsu3500 has the same issue?

-- Dave

Well, add me to the list of Pronto TSU3000 owners with touch screen calibration issues. 2.5 yr old unit worked fine. Used it one morning, then later the same day it did not work. I used the pin trick described in this forum to make it work again.

Thanks to this forum for saving me $300+.

My first pronto had been sat unused in a box for two years, so when I came to use it, it lasted for about three weeks before the same problem happened as most people have seen here.

I followed the hallowed pinprick method and it appears to have worked. I have taken a couple of photos which may help anyone else who tries this.

Firstly, the green surround which sits over the top of the touchscreen needs to be removed as has been mentioned previously. I found a trick which makes it easy - get hold of something flat and soft like a plastic ziptie and slide it across the screen in the direction of the red arrow and push against the clip you can see in the photo (push towards the outside of the pronto to unhook it). The surround will come away very easily as soon as this unclips.



Secondly, here is a picture of the four contacts you need to puncture. Press with a needle or scalpel downwards (in relation to the picture), but don't expect it to go very far as the ribbon itself is sitting on the glass body of the touchscreen. If you can see dents in the ribbon, you may have done enough. I didn't go so far as to puncture anything, but I have no idea how long my pronto will stay fixed.



Don't be afraid to have a go, the biggest challenge is probably getting the size6 Torx bit. Make sure to clear yourself a decent workspace and lay the parts out in the order in which you removed them. DON'T FORGET THE FIFTH SCREW which is holding the touchscreen circuit board onto the front cover!

Good luck!

How did you manage to lift off the ribon from the touchscreen ?
After one month from th job I have agai the problem so I now have decided to lift the ribon and to fix it by means of 4 solderings.

Did you use a solvent ?

Thanks for the help.

miazza

Just pull it off.