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brik1111

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About brik1111

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  1. Thabks Marc, very useful information. I'll source a smaller screwdriver and report back
  2. Looks like I will probably be doing this if all else fails. I'm not restricted by time though, so if I can get it out without any destructive means it would be preferable
  3. Are the screws to release the dial stuff shown in these photos? If so, I'm going to need a smaller screwdriver lol
  4. The problem is, I can remove any of that stuff because the stuck screw is in a critical place, holding the top plate in. I've removed every other screw I can too and found another stuck one (to the left of the word "Swiss") which is holding the other major plate in.
  5. Thanks for the swift answers, everyone. A few follow up questions: Would WD-40 be considered penetrating oil? I've tried quite a bit of that - leaving to soak over the area where the screw is for a day or so - and have had no luck removing it. If so, kerosene would be the next logical step, however (and this might seem like a dumb question) would that wreck the still attached watch face at all? Just wondering, since it will be completely soaked in it. Alum seems like the nuclear option to me, but I'll keep it in mind if all else fails.
  6. Hi all, I'm having a crack at fixing an Eska that's not running, but I haven't gotten very far yet because of a screw that's stuck in place. The problem screw is the one below the word "co", and while the others of the same size happily turn (with a brand new screwdriver), nothing will budge this one. I did some research and some sources recommended using either WD40 or a soldering iron to loosen it, but I've tried both without any luck. Is there something obvious I'm missing here in order to remove it? Or does anyone have any tips? Greatly appreciated.
  7. Hopefully the corrosion hasn't completely cooked it but that looks like a great plan B - thanks for bringing it to my attention! Either way, I would be in front cost wise if eBay prices are to be believed. Also, any tips for fine tuning the accuracy? No doubt I've put it out of whack. Thanks for the link! Should help me a lot
  8. Hi there, I've noticed that mostly analogue watches are discussed on this forum so hopefully posting about a digital watch is okay. I bought this M929 from a thrift store for $3 the other day in a non-working condition. After opening it for the first time, it was evident that a battery had leaked at some point - there was quite a bit of corrosive material everywhere. After giving it quite the clean using vinegar for the batteries crap and isopropyl alcohol for everything else, the backlight was again functioning, however, the LCD was not. There appears to be some sort of potentiometer on the back of the main module, although this looks exactly the same as the screws that held in a back metal plate so I stupidly rotated it for a while before I realised it wasn't a screw. I've roughly rotated it back using a reference photo I took before I dismantled it (below) but the best I can get is a very dim set of numbers that flash and are only visible if directly under a light and viewed from an extreme angle - and even then, it does this randomly. I'm not sure if the pot is even for the LCD, though. I've also checked all the other components on the board with a multimeter and there seems to be continuity at least, although measuring the pot leads to no usable number of ohms. Here's a bunch of photos I took. Hopefully, they can be helpful. Any help with the repair will be greatly appreciated. Here is what the watch looked like on first opening. You can see green/blue muck everywhere. Here you can see the extent of the corrosion on the buttons. This was even holding some of them in place. Vinegar made short work of it, however. A close up of the main module before disassembly. The flipside of the module. Corrosion was bad here too More disassembly and after cleaning Otherside. Note the pot at the bottom LCD, reflector and contact transfer things Close up of the LCD The plastic casing cleaned. There is still a bit of corrosion on those contacts but that is as much as I could remove. The flipside Reassembled after cleaning. Accidentally added some scratches from the screwdriver slipping, though. Whoops. Flipside The corrosion had actually eaten into the watches metal. Luckily the buttons were fine after being cleaned. The backlight.
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