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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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#1
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Looking for Toshiba remote schematic
I'm getting the impression that not even the service manuals have diagrams
for the remotes! I'd love to see a schematic for the CT-9946, but almost any modern Toshiba TV remote schematic would probably help. It's not just the forty bucks, this would be the first personally-owned remote I couldn't repair in over thirty years. -- If John McCain gets the 2008 Republican Presidential nomination, my vote for President will be a write-in for Jiang Zemin. |
#2
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Looking for Toshiba remote schematic
I have NEVER seen a schematic for a remote control on any consumer
electronics device service manual since something like 1990. They simply are not available. All modern remote controls consist of pretty much a pre-programmed microcontroller/ remote signal generator, the crystal, a few resistors and capacitors, the IR LED, and the circuit board which double as the keyboard with the rubber keypad with the conductive carbon sprayed on it. Troubleshooting it amounts to checking to see if the xtal is running and verifying the key presses by watching the light out of the IR LED (with a video camera). Placing a regular LED across the IR led will tell if everything except for the IR LED was working. |
#3
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Looking for Toshiba remote schematic
Greetings,
Just fixed a Toshiba a while back crystal and LED were fine, had a bad cap, 25uf @ 10V or 10uf if I remember correctly. Dug one out of a junked hard drive, I do remember that it had quite a few descrete components. Just fixed our remote, wife managed to get lemonade in it, she said don't ask, guess it fell into the container. I took it all apart, rinsed it out, blew it off and put it under a lamp for a few hours to dry out. Just took it upstairs, that remote works fine now as well. Does it work any channels at all? I built up a tester years ago, the Toshiba remote put out signal, must of been 'shifted' by the defective cap, it didn't work correctly, it would only work once or twice after pulling the battery for a couple of hours, put it in and it would work only a couple of times before dying. look close at the board for leakage around the base of all of the caps. Good luck. Markus On Tue, 25 Oct 2005 15:35:19 -0500, clifto wrote: I'm getting the impression that not even the service manuals have diagrams for the remotes! I'd love to see a schematic for the CT-9946, but almost any modern Toshiba TV remote schematic would probably help. It's not just the forty bucks, this would be the first personally-owned remote I couldn't repair in over thirty years. |
#4
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Looking for Toshiba remote schematic
I have many used ones any numbers on the remote?
Doug |
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