Question about Televison & Video
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Posted on Jan 02, 2017
Contact Fox International parts at 1-800-321-6993
or Sansui troubleshooting hotline at 800-289-0980
Posted on Nov 13, 2007
SOURCE: remote control will not work
That is certainly unusual for a remote receiver to go bad unless it was struck directly or exposed to damage. Anyway.... the procedure obviously involves getting to the PCB to replace the module. I've not worked on that exact model, but all CRT televisions are similar, and that one is made by Orion.
There really are two options: Front and back.
You can go in the back way, by removing screws and such until you can pull the rear housing off. Make sure you first unplug the unit for about 15 minutes. Leave it unplugged.
If you are uncomfortable doing this, then, please, buy a new TV.
I STRONGLY suggest that you discharge the main capacitor by grounding the anode. If you don't know what this means, then buy a new TV. You don't need a special tool, just a long, flathead screwdriver grounded with a wire to an earth ground will do. If your are afraid of getting shocked, buy a new TV.
The CRT will be mounted in a chassis attached to a main PCB at the bottom. It will be screwed to the housing face. You will have to separate the chassis/board from the face of the housing also, being careful to remove all the screws around the front input assembly. The housing removal is quite easy, but it will take time. You will then be able to locate the IR module at the front of the board. Carefully de-solder it and install the new one. Reassemble.
Somethings I would do before I undertook this venture:
Be ABSOLUTELY sure that the IR module is at fault. Not the remote.
Check the IR module for 5V at Vcc to rule out a faulty IC.
Confirm replacement module is similar in pin-out, freq. (bandwith), voltage
Reserve a good afternoon block of weekend time.
Chill some brews.
Create a large work space if you don't have a bench. And if you do have a bench, clear some space.
Be prepared to be without this TV forever, because everyone screws up sometimes.
The front inputs may give a bit of trouble. Take it easy there if you wish not to break anything.
If you are afraid to open the back. You could always go in the front. Unplug. Dremel a hole under the IR module using a depth limiter. Remove Vcc from existing module. Piggy back new module. Tada! Cake. Remember that is you put it under the board, the pins will be reversed.
If you are careful enough, after the anode, there is not much to screw up besides some broken plastic or bent front inputs.
Posted on Jun 30, 2008
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