Not to necro this post, but Google thought I would be interested in this article and your own answer doesn't satisfy my want to fix things properly.
If you are getting clean video off the RF, then you do not have a video processor problem. The composite out jack gets the same signal that feeds the RF converter inside the console. The difference between these signals is that it passes through a signal amplifier before getting to the composite out port. This is a simple 5v feed (pulled from the RF converter as well) with a transistor.
The three most likely scenarios are: that you are using junky cables, the composite video jack has a loose solder joint with the motherboard, or the composite video transistor is bad.
A replacement transistor can be bought from digikey https://www.digikey.com/en/products/detail/onsemi/BC548CTA/3478140
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You may also want to check for power issues in general. If your console is not getting the 5v it needs to run these circuits, components (like transistors) can have trouble doing their jobs in the first place.
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You may also want to check for power issues in general. If your console is not getting the 5v DC it needs (from a rectified 9v AC) to run these circuits, components (like transistors) can have trouble doing their jobs in the first place.
Not to necro this post, but Google thought I would be interested in this article and your own answer doesn't satisfy my want to fix things properly.
If you are getting clean video off the RF, then you do not have a video processor problem. The composite out jack gets the same signal that feeds the RF converter inside the console. The difference between these signals is that it passes through a signal amplifier before getting to the composite out port. This is a simple 5v feed (pulled from the RF converter as well) with a transistor.
The three most likely scenarios are: that you are using junky cables, the composite video jack has a loose solder joint with the motherboard, or the composite video transistor is bad.
A replacement transistor can be bought from digikey https://www.digikey.com/en/products/detail/onsemi/BC548CTA/3478140
+
+
You may also want to check for power issues in general. If your console is not getting the 5v it needs to run these circuits, components (like transistors) can have trouble doing their jobs in the first place.
Not to necro this post, but Google thought I would be interested in this article and your own answer doesn't satisfy my want to fix things properly.
If you are getting clean video off the RF, then you do not have a video processor problem. The composite out jack gets the same signal that feeds the RF converter inside the console. The difference between these signals is that it passes through a signal amplifier before getting to the composite out port. This is a simple 5v feed (pulled from the RF converter as well) with a transistor.
The three most likely scenarios are: that you are using junky cables, the composite video jack has a loose solder joint with the motherboard, or the composite video transistor is bad.
A replacement transistor can be bought from digikey https://www.digikey.com/en/products/detail/onsemi/BC548CTA/3478140