First Spear Posted June 5, 2020 Share Posted June 5, 2020 Hi all. Intellivision II has a shielded RCA cable going to an RCA-to-coax converter, plugged into TV antenna-in. The picture is garbled. Adding a signal booster is slightly stronger, but still garbled. Where is the best place to look for a "fix"? Thanks. Video of console screen without booster: https://bit.ly/3gXH9lX Video of console screen with booster: https://bit.ly/2z60wrQ Quote Link to comment Share on other sites More sharing options...
IMBerzerk Posted June 5, 2020 Share Posted June 5, 2020 You mention a converter... by that do you mean adaptor... Just a connection changer? Or do you have some kind of powered conversion box By the look of it the RF box on the Inty II board is having issues. I think there is a potentiometer you can adjust. Did you try that? If not....you might need to replace the little RF box Quote Link to comment Share on other sites More sharing options...
First Spear Posted June 6, 2020 Author Share Posted June 6, 2020 4 hours ago, IMBerzerk said: You mention a converter... by that do you mean adaptor... Just a connection changer? Or do you have some kind of powered conversion box By the look of it the RF box on the Inty II board is having issues. I think there is a potentiometer you can adjust. Did you try that? If not....you might need to replace the little RF box The converter looks like the image The RF signal booster is AC powered. There is no pot anywhere I can see. Thanks. Quote Link to comment Share on other sites More sharing options...
IMBerzerk Posted June 6, 2020 Share Posted June 6, 2020 (edited) That adapter wouldn't cause the issue. Wiggle the cable as well. If you have an old cable, it will cause all kinds of issues. If the easy stuff doesn't fix it... then it's most likely the RF output box. Edited June 6, 2020 by IMBerzerk Quote Link to comment Share on other sites More sharing options...
First Spear Posted June 20, 2020 Author Share Posted June 20, 2020 On 6/5/2020 at 9:26 PM, IMBerzerk said: That adapter wouldn't cause the issue. Wiggle the cable as well. If you have an old cable, it will cause all kinds of issues. If the easy stuff doesn't fix it... then it's most likely the RF output box. by RF output box, do you mean a component within the Intellivision? Quote Link to comment Share on other sites More sharing options...
IMBerzerk Posted June 20, 2020 Share Posted June 20, 2020 Yes. Open the unit, and take a pic. I don't own an Intv2, but maybe we can see where the issue is. It definitely sounds like the RF Modulator. It's a small box that is for lack of better words ..the caboose of the whole processing train to get the signal to the TV. Quote Link to comment Share on other sites More sharing options...
mr_me Posted June 20, 2020 Share Posted June 20, 2020 Rf modulator should be ASTEC UM1285-8. Have you tested on another TV? Quote Link to comment Share on other sites More sharing options...
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