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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Leappad - Children reading aid.
Hello all,
My son has recently asked me to sort out his "Leappad" electronic reading aid. Its a bit of kit which looks like a large green and blue hard back book. You open it and place a printed paper book inside it. As you open the pages it allows you to place a stylus on the printed book and it will read words, sentences or phrases out of the book. Anyway to the point. The stylus started erratic operation and I found that by holding the stylus in a particular place the stylus worked OK. So I deduced a fractured wire. The stylus can be removed and unplugged from the main unit. I had to force open the stylus to replace the thin coaxial cable connecting it to the main unit. All that was at the end of the stylus was a 3-4mm length of the coax with a small brass "nipple" on the end. Nothing fancy at all. Needless to say it does not recognise what part of the page you are on or even that you have placed the stylus on the paper. Under the book is a large plastic membrane with like an XY matrix on it. Anyone got any ideas how it works. I suspect the matrix is scanned quickly and wherever the stylus rests tells the unit where the stylus is. One idea...... I've searced the net and found nothing, and it seems a shame to bin it as he gets loads of fun from it. Over to you..... regards Sean Hall, York, United Kingdom |
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The stylus started erratic operation and I found
that by holding the stylus in a particular place the stylus worked OK. So I deduced a fractured wire. The stylus can be removed and unplugged from the main unit. I had to force open the stylus to replace the thin coaxial cable connecting it to the main unit. Sean, I had one of those open once, and I thought it was the stylus as well. It didn't work any better after breaking it open and "repairing" it, so I bought another stylus... same thing! Turns out the problem is inside the tablet where the connectors plug in. Clean the contacts, reassemble it and it should work fine again. The stylus is apparently capacitively coupled and can't get enough signal with the bad contacts. Ray -- My return addy is spamblocked. To reply, remove the zeroes. |
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