I have been given a metex ms 2000 handyscope to use for fault finding.
It works but the 30 year old battery pack is no good, i have purchased the new correct batteries, tryed to put it all back together but couldnt get get continuity between the four 1.2v batteries, upon checking one of the components, a thermal fuse has blown i think.
now the issue is that I dont know what the part is, how to work out what it is and were to buy the components.
Im looking forward to getting it going so if anyone could help that would brilliant, and would certainly make my day
Hope everyone is well.
Chris 😊
Nostalgia I suppose but it is still good for continuity, diode checking that sort of thing, would love to have it working
I will definitely definitley be getting a new one, this has been knocking for ages and deserves second life I think.
Can I ask what you mean by 70 and 44 how do I translate that into a part I honestly am nowere near understanding how to either find a replacement or alternative I am new im sad to say I imagine ill look back in year and think jeez lol
thanks for that but if look ill also need a replacement(whatever the small cone shape thing is with the yellow top connected to the klixon IC) do you know what it is ?
thanks for that but if look ill also need a replacement(whatever the small cone shape thing is with the yellow top connected to the klixon IC) do you know what it is ?
it is a "microtemp" thermal fuse. in theory they will self-reset when the temperature drops, but rarely do. for examples, see:
https://www.ermec.es/Therm-o-disc/ThermalFuseswhen replacing one, it is
very important to
not heat up the microtemp's leads, often the leads will be welded or crimped.
cheers,
rob :-)
I found now thank you it was 98c 10a, I had a thought about soldering the leads to the fuse, im going to use flux and only putting iron on for 2 secs max, as an added bumper so to speak, im going to wet a sponge and put it inbetween were im soldering and the actual component to try minimise any overheating due to excessive heat whe soldering, ill post how i got on when i recieve the fuse. thank you for your help
keep the device leads full-length, and hold with a pair of snipe-nosed pliers between the solder joint and the component to conduct away the heat.
years ago, you used to be able to buy what looked like tiny spring-loaded clothes pegs made out of solid metal that you could clip onto a component lead to help conduct the heat away. i doubted anyone even made these any more, but checking i see that goot still do:
https://en.goot.jp/products/detail/h_2slcheers,
rob :-)
il do that cheers Rob, got fuses yesterday gonna play with that battery pack tomorrow ill keep you posted
So update. it all went well until i tried plugging it into meter, could hear little pops, so disconnected and meter which is fine thankfully, think i shoul dof changed diode aswell, I was sloppy
. will re update when I get a diode
it turns out the battery pack was fine i had inserted it properly, love this now, would be nice to find a replacement display due to the backlight not functioning.