Video Asylum

Posted by Joe Murphy Jr (A) on June 06, 2004 at 17:14:15

In Reply to: Re: Now that I've eliminated the VCR as the problem posted by Brian Kheel on June 06, 2004 at 12:32:06:

Here's my best guess:

The demodulator and/or resistors/capacitors directly after it on the circuit board in the Toshiba TV are bad. The RCA inputs on the TV are separate from the coax (RF) input on the TV, which has to be demodulated (decoded, if you will), and that's why they work while the coax (RF) path is giving you a problem.

The TV's demodulator probably needs to be removed and replaced. Usually the coax (RF) input and the demodulator are together as one piece (the threaded part leads to a very small silver "box" on a circuit board inside the TV).

You might be able to find Toshiba demodulators at markertek.com, partsexpress.com or mcmelectronics.com, if you want to do it yourself. If it ends up being resistors/capacitors as well, they'll also have to be replaced. If you are adept at soldering and electronics work, this should be easy. If not, I'd let a TV technician do it (I'd estimate this repair to cost around $50 - $100, depending on how much they want to screw you).