M1JWR Posted July 31, 2020 Report Share Posted July 31, 2020 just bought one, got it today spares or repair, its ok folks, it did have a problem and i have fixed it. it concerned the record pot, take the knob off and you could push the shaft all the way through, there is a small pcb contact set up on the other side that is held together with 4 metal clips, the clips were bent back so repair is needed, its very easy, wish they were all like that, simply put the two parts back together and push the 4 clips back into their places with a small serewdriver, re attach with the two screws and thats that, luckily its the only part that is seperate from the main board behind the front panel so nothing broken, it now does everything it should do, so a good buy, there is no info on rec and play time on this one so i guess the internal battery is shot, as a lot of them will be after 20 years, next thing is i still have that 520 with the knackered owh, so ive bought another very cheap that looks like its been dragged through a hedge, fingers crossed, seller says it works !!!!!!! Quote Link to comment Share on other sites More sharing options...
NGY Posted August 1, 2020 Report Share Posted August 1, 2020 8 hours ago, M1JWR said: there is no info on rec and play time on this one so i guess the internal battery is shot Record/Play hours information (just as other settings in the Service Menu) are stored in a non volatile memory, thus not impacted by a dead internal battery cell. Imagine, if they were, all delicate laser settings etc. would "evaporate" on a power outage if the battery was dead. This would be a very bad design then. Congratulations on the good buy and the successful repair. Another great 930 saved. Quote Link to comment Share on other sites More sharing options...
freddyjollo Posted August 1, 2020 Report Share Posted August 1, 2020 internal battery? surly there aint one? I hope not Quote Link to comment Share on other sites More sharing options...
NGY Posted August 1, 2020 Report Share Posted August 1, 2020 2 hours ago, freddyjollo said: internal battery? surly there aint one? I hope not In this thread, I guess nobody said anything like there was no internal battery. Where do you see such a statement? Quote Link to comment Share on other sites More sharing options...
M1JWR Posted August 1, 2020 Author Report Share Posted August 1, 2020 i wonder what is bt701 lithium battery on what is called the bat board used for, i looked on the downloaded service manual, if you see internal pics, its to the front right of the drive unit, looks like a large watch battery with a purple surround on it Quote Link to comment Share on other sites More sharing options...
NGY Posted August 1, 2020 Report Share Posted August 1, 2020 7 minutes ago, M1JWR said: i wonder what is bt701 lithium battery on what is called the bat board used for, i looked on the downloaded service manual, if you see internal pics, its to the front right of the drive unit, looks like a large watch battery with a purple surround on it Exactly. That is the internal battery, with the purpose of being the backup power for the memory that holds the user settings (i.e., in the Setup menu) and the TOC data to be written to the disc. Quote Link to comment Share on other sites More sharing options...
M1JWR Posted August 1, 2020 Author Report Share Posted August 1, 2020 so are we saying that if the player isent used for a long time and the battery is shot all settings will revert to default might have been 10 years or more since this player was last used in anger, just guessing, i dont know its past. Quote Link to comment Share on other sites More sharing options...
NGY Posted August 1, 2020 Report Share Posted August 1, 2020 5 minutes ago, M1JWR said: so are we saying that if the player isent used for a long time and the battery is shot all settings will revert to default Yes. But when you say "all settings", it means "all settings made in the Setup menu". Nothing else. Quote Link to comment Share on other sites More sharing options...
M1JWR Posted August 1, 2020 Author Report Share Posted August 1, 2020 ok so somebody must've had the knowhow to reset total rec and play times , i will have it on soak test for awhile and build up a few hours and see what happens in time. i did record two albums with it today so thats a start, i even edited it on one or two tracks where it missed the gaps, all good. Quote Link to comment Share on other sites More sharing options...
NGY Posted August 1, 2020 Report Share Posted August 1, 2020 Just now, M1JWR said: ok so somebody must've had the knowhow to reset total rec and play times You can easily do it as well, should you want to. It is in the same submenu (aka ERROR DP MODE) in Service mode, just a few ticks away with the AMS button. And it is described in the Service Manual too (page 3). Quote Link to comment Share on other sites More sharing options...
M1JWR Posted August 1, 2020 Author Report Share Posted August 1, 2020 yeah i knew that, dont see the point myself, i got a spares or repair 940 a while back, it was the same Quote Link to comment Share on other sites More sharing options...
NGY Posted August 1, 2020 Report Share Posted August 1, 2020 12 minutes ago, M1JWR said: i got a spares or repair 940 a while back, it was the same The 940 is a different story. The x40 family (440/640/940), as well as the S50, the PC3 (and potentially other models too, with the same MDM-7 flavour and having the same EEPROM code) have a "glitch" in their firmware, that causes these counters seem never moving away from 1 hour. We have touched this once before (here). Quote Link to comment Share on other sites More sharing options...
M1JWR Posted August 1, 2020 Author Report Share Posted August 1, 2020 interesting will have a read on that, will get back to everybody in due course, i think the 520 repair will come under another thread, part 42 !!!! seller is posting the "s&r 520 thing" on monday. if its got good parts for what i want, by looking at it i will probably scrap the rest. Quote Link to comment Share on other sites More sharing options...
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