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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Problem with JVC TV Vide2 input
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Problem with JVC TV Vide2 input
Thanks for the reply, Wizard. But to be clear - this isn't an Xbox
issue. I can't get source to display properly on the Video2 input. For example, the component output from my TiVo works fine on Video1, but I get a dark, scrambled signal when I connect it to Video2. It looks to me like the signal isn't syncing, but I have no idea how or why this could be happening. Anyone have an idea how I could diagnose this without calling in a pro repair guy? Thanks, Dan Xbox is component output by default out of box and needs dongle cables or converter box to adapt to either S-video or composite. JVC of this vintage doesn't have component input, keep that in mind. But any JVC even new ones is very nice set through. Take care of yours well. Cheers, Wizard Any ideas? Thanks, Dan |
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Problem with JVC TV Vide2 input
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Problem with JVC TV Vide2 input
Wizard,
My mistake in using "component" when I meant composit. I have a Toshiba HDTV with component inputs and am well aware of the difference, even if my fingers are not. To answer your question, I do not have problems using the S-video on video 1, nor do I have any problems with the composite input on video 1. The RF input also works fine. The video 2 is the only input giving me problems, regardless of source. Based on your feedback it sounds like I need to call a repair person. Thanks for your help, Dan (Jason D.) wrote in message ... On 2 Apr 2004 09:08:09 -0800, (Dan) wrote: Thanks for the reply, Wizard. But to be clear - this isn't an Xbox issue. I can't get source to display properly on the Video2 input. For example, the component output from my TiVo works fine on Video1, but I get a dark, scrambled signal when I connect it to Video2. It looks to me like the signal isn't syncing, but I have no idea how or why this could be happening. Anyone have an idea how I could diagnose this without calling in a pro repair guy? Thanks, Dan Dan, There's component video again, not same meaning as composite. There are many types of signals. Component is one of them, it uses three plug system (Yb, Pb and C). Also AV-35BH4 doesn't support component video, only s-video, composite or RF. By the way, There's no number 3, the RF connector (that one cable or antenna connects to that is RF connector. Video 1 is the S-video or composite (not both), Video 2 is composite as you stated. I repair JVC new and vintages like yours and other brands daily so I know their JVC style well, get yours set fixed. There is a problem in the switching video area that is degrading the signal quality from that video 2. You do have no problems using S-video or video 1? Composite is routed through video switch circuits then through comb filter circuit to split composite into Y (luma) and C (chroma aka color info) which is what S video is then back to jungle IC. S-video alsos goes through video switch and directly to the jungle IC bypassing comb filter. Tuner video output needs much pre-processing before outputting composite video and helps to tune into channels via feedback circuits, Signal from tuner goes into jungle IC then out again to the video switch circuit (same circuit that taks inputs) then through same comb filter circuit then back to then jungle. Not much have changed in concept over the years except for junk and odd balls. I can tell the differences in quality using RF, composite, S-video and component. Least to best in that order, seperate signals allows more bandwith for the info to transmit through wires, hence less picture quality loss. Cheers, Wizard |
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