2600 Woody Problem

[Ghost Soldier]

This is a problem I'm having with a 4 switch woody I recently purchased. The case is cracked to heck and back but the motherboard, connectors and everything appears to be ok. The problem is when I hook it up and power it on theres a flicker that it receives power and then it does nothing but produce a black screen on the tv. The system has been cleaned and so have all my games. I have a JR that they work fine on. I have replaced the phono cord and it runs into a coaxial jobbie so no rf switch probs. It happens on both channels. Normally I'd expect a discolored screen or garbled mess but this is nothing. Just a power flickr when you turn it on and the screen goes to black.

[llabnip]

This is a problem I'm having with a 4 switch woody I recently purchased. The case is cracked to heck and back but the motherboard, connectors and everything appears to be ok. The problem is when I hook it up and power it on theres a flicker that it receives power and then it does nothing but produce a black screen on the tv. The system has been cleaned and so have all my games. I have a JR that they work fine on. I have replaced the phono cord and it runs into a coaxial jobbie so no rf switch probs. It happens on both channels. Normally I'd expect a discolored screen or garbled mess but this is nothing. Just a power flickr when you turn it on and the screen goes to black.

 

The primary culprit for bad (but non-snowy) video is the TIA chip. Of the many systems I've dealt with over the years, the TIA chip (CO10444D) has been responsible for 2 systems where the video simply was either all black or black with horizontally green scrolling lines. I replaced the TIA chip and it worked fine. You may want to open the unit and make sure the TIA chip is seated properly in the socket - if the case is cracked there is at least some possibility that the chip may have come unseated... press it in firmly and try again. Also check that the IO chip (CO10750 I think) is seated properly. Heck, there are only like 3 socketed chips - check them all! If you have another system where you can swap in each of the three socketed chips (one at a time, of course), you can quickly diagnose the faulty chip. 9 times out of 10 a failure as you describe can be traced back to one of these three chips (and far more often than not it's the TIA chip as it handles the output to the TV).

[Ghost Soldier]

where's this devil hiding, possibly under the armor plate I mean shield ? 8-) Thanx for the help I'll go home and mess with it tonight to see if thats it. Would radio shack carry that part ?