MarkMLl

Joined on Sep 30, 2020

MarkMLl's recent activity

  • I've been able to use a 3D printer to make adequate front and rear caps for an Olympus CLA-11 adapter and TCON-17 lens using the thread sizes given. I used PLA with a layer height of 0.05mm, and ...
  • Created question thread Olympus proprietary threads
    Has anybody managed to assemble a list of the thread sizes that Olympus used on cameras that needed non-standard front-mounting accessories? Leaving aside for the moment the hazard of screwing ...
  • That's because there's both non-volatile memory (Flash or possibly older-style EEPROM) and battery-backed RAM+clock (really old embedded kit would have something like a M48T08). Dead battery -> no ...
  • I'm not disagreeing with that. All I'm saying is that it's not necessarily for a straightforward reason. The bottom line is that a device requires a certain amount of power, i.e. energy per second. ...
  • Agreed, but that is assuming that the batteries are feeding a resistive load. For anything made over the last 20 years or so it's likely that the battery is feeding into some sort of "switching ...
  • If I can make a tentative observation at this point. I believe that my E-520 (bought second-hand so its history is unknown) was in a state where it lost things like whether the flash should pop-up ...
  • Replied in Don’t
    True. But broadly speaking AAs are in the 1.2-1.6V range and include alkaline and the old zinc-carbon cells, and the point I'm trying to make is that they're distinct from the higher-voltage ...
  • Even if "Stars like jewels in the crown of a queen" is hopelessly dated in this era of light pollution and reality TV.
  • Replied in Don’t
    Depends. An AA battery is more likely to be a 1.5V NiMH (replacing NiCd) which benefits from being discharged... in fact in some cases they can benefit from comparatively brutal treatment since if ...
  • Noting what everybody else has said: I've got thread gauges and can confirm 0.75mm as the front-of-lens fitting on Olympus E-5xx and SP-5xx lenses. I remember reading something a few years ago ...
  • My apologies for contributing to a very old thread, particularly one which already contains an unseemly amount of discord. I've just come across this https://renesasrulz.com/r32c/f/r32c---forum/157 ...
  • I did an E-500 this morning, which was a much simpler job since the battery is accessible (albeit under a piece of black tape) as soon as the camera back is removed. I'd have finished the job in ...
  • My apologies for a very late comment to this thread, but since Google presents it as one of the few useful resources relating to Olympus lens repair I feel it's worth getting a couple of things ...
  • The most important thing from my POV- apart from now having a fully-working decent camera- is that I have in a small way contributed to the pool of public knowledge: there /is/ a battery in there, ...
  • I agree, and the heads of the screws do have a plausible JIS marker. However none of them are (or should be) torqued aggressively, and they're quality metal which reduces the risk of mishaps... ...
  • I am pleased to say that I now have a working E520, which retains its state. Detailed instructions follow. ----- REPLACING THE INTERNAL BATTERY ON AN OLYMPUS E-520. -------------------------------- ...
  • I'm extremely late to this thread but please could I provide a cross-link to a parallel discussion and then correct one serious misapprehension before Google propagates it any further. More recent ...
  • As I said, the unknown is the relative placement of the tags. I wouldn't dream of trying to solder directly onto a battery, and don't have that type of spot welder.
  • I've got a Panasonic MI621 on order which was the nearest I could find: my usual supplier (All Batteries in the UK) let me down. In practice I think that "Lithium Rechargeable" is probably an ...
  • The important thing is to recognise the brown flexible PCBs, since they're the "embarrassing if broken" ones... having said which they're more amenable to reconstruction than they used to be https: ...
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