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Signal Collapeses after a Few Seconds Toshiba MV13L2
Hello all! Thanks for accepting me into the forum. I am working on a Toshiba MV13L2 with the following issue. It turns on, I get good static screen on channel 3 with static noise for about 3-4 seconds, then it distorts, and then goes dim. The static screen is still there, dark but there, the sound goes away completely. This is true for Tuner IN, VIN, and VCR in. They all do the same thing, loss of picture after a few seconds. Another clue, the MENU overlay/ CHANNEL/ VOLUME etc. Looks great. It gets "wavy" after some time, but is not dim and bad like the rest of the picture. See my attached videos. I am mostly out of ideas
I have done the following: Verified good 5v and 8v. I did this at a single place on the board, not right next to the Jungle IC. I need to go back and verify 5V right next to the jungle IC... Replaced pretty much every capacitor that has to do with the power to the Jungle IC and around it. Video shows the two different screens on boot, TUNER and VIN. Link to video of issue: https://www.youtube.com/shorts/CqER-i8tcRQ |
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