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audioboyz1973
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Post subject: Re: Muse / Hi-Vision discs won't auto reverse Posted: 25 Oct 2015, 12:02 |
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Joined: 16 Jun 2015, 15:40 Posts: 825 Location: Australia Has thanked: 105 times Been thanked: 95 times
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We were watching Universal Soldier (a cinematographic masterpiece right? ) and it wouldn't turn at the end of side A, the player just stopped. Later I tried Twins and Back to the Future and no response to side B button. I put Universal Soldier in just before replying and it wouldn't respond when I pressed the side B button. Then tried Twins and it did! So I tried Back to the Future and it turned! then I put Universal Soldier back in and guess what - it turned! Really not sure what is going on here - randomly defective button on the remote? But then Universal Soldier wouldn't change first time when just watching and getting to the end of side A - not selecting side B from remote. And why did it still not work the first time I tried just now but it did on the second? Anyway if there was just some kind of random 'glitch in the matrix' I'm hoping running a few muse discs through the player (who knows maybe for the first time it's played them??) has cleared it. Think I'll just carry on and see what happens - if it plays up again, and particularly if it does and I pick up any pattern in it, will post again. Otherwise it's just a manual side change!
Last edited by audioboyz1973 on 25 Oct 2015, 12:12, edited 1 time in total.
_________________ Looking for Hi-Vision Discs (MUSE or HDVS).......
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admin
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Post subject: Re: Muse / Hi-Vision discs won't auto reverse Posted: 29 Oct 2015, 07:46 |
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Joined: 07 Aug 2002, 23:37 Posts: 4584 Location: Tokyo Has thanked: 305 times Been thanked: 1177 times
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audioboyz1973 wrote: I've started with the assumption in this post that the problem is just with muse discs, but then I thought perhaps the player has just developed an intermittent problem that will affect all discs and it's just coincidence it happened on the day that a few muse turned up to play. It did happen to me as well in the past, on a single MUSE Disc. Can't remember which one. It got me puzzled for a while but the next day everything worked fine again. Maybe the reader sometimes misses some info reading the TOC (table of contents) and is not aware there is a B side available? Julien
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audioboyz1973
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Post subject: Re: Muse / Hi-Vision discs won't auto reverse Posted: 31 Oct 2015, 13:44 |
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Joined: 16 Jun 2015, 15:40 Posts: 825 Location: Australia Has thanked: 105 times Been thanked: 95 times
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Yes, a soldering iron at the very least I think. Actually I'm very happy with myself after today. Decided to have a go at fixing the issues with the SP-D07. Here's a peek inside: Attachment:
IMG_3704 reduced.jpg [ 122.96 KiB | Viewed 10430 times ]
Decided to have a go at the dodgy centre channel input first since it seemed most likely to be the attachment of the socket to the PCB so hopefully straightforward. As a teenager I used to build some kits and considered myself okay at soldering, but it's been a while since I did more than solder a plug on a lead. Spent a little time with google and youtube to be sure what to look for with a bad solder joint. Soon realised it wasn't going to be so simple to get to though. The input socket assembly is circled in red. So to get to it had to remove the front panel and the volume control from it, detach the upper PCB at the back to get to the last screw holding the lower in place, then a delicate manoeuvre to get to the underside of the PCB. The solder joints on the connector looked dodgy so re-soldered them and some on the other connectors too. Then got the boards back in place. Then the remote issue. Had worked out the remote/control circuitry was on the RHS of the Power supply PCB; one of the black wires coming from the front panel was labelled 'RMC' on the PCB and the system remote sockets are circled in blue. Plan was to check the whole side of the board for any bad looking joints. Fiddly to get to again, had to remove the transformer and cooling fan with the front panel off to manoeuvre the board out. The only bad joins I could find were the attachment of the system remote sockets to the PCB. Re-soldered those. Kind of thought these would be 'end of the line' in the circuit an not necessarily stop the whole remote system from working, but all the other joins looked fine so decided to reassemble. Moment of truth - plugged it back in and it turned on via remote! Checked out the centre input and now it was working fine too Took a while and some patience to get it done but was not too hard, and having it all working properly now is very rewarding. Feel much more now that I might be able to successfully tackle the decoder.
_________________ Looking for Hi-Vision Discs (MUSE or HDVS).......
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audioboyz1973
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Post subject: Re: Muse / Hi-Vision discs won't auto reverse Posted: 31 Oct 2015, 14:30 |
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Joined: 16 Jun 2015, 15:40 Posts: 825 Location: Australia Has thanked: 105 times Been thanked: 95 times
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Then spent a little bit of time poking around in the HV-MD2. Have worked out that the area on the PCB circled in yellow below is the area most particularly sensitive to any physical movement/shock. The very slightest touch or flex of the board here could make the picture drop in and out, the small black heat-sink there seemed particularly 'touchy'. Attachment:
IMG_3705 reduced.jpg [ 147.19 KiB | Viewed 10426 times ]
My plan - perhaps for next weekend - as a first step is to have a good look at the underside of that board especially in that area for any bad joins and deal with any. At least this will be a lot less fiddly to get the board out compared to the SP-D07. Hopefully that might at least deal with the picture dropping in and out. Not so sure about the hum the audio is picking up though, perhaps a bad earth somewhere? Or do you think something like a faulty capacitor could cause it? I just have standard multimeter, though after a bit of reading it seems if I'm going to effectively test capacitors I'll need a capacitance meter. Or might it be just as effective to assume they're bad and start replacing them??
_________________ Looking for Hi-Vision Discs (MUSE or HDVS).......
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