LCD Memosail repair

[MacSki]

Hi there! I'm wondering if somebody here could point me in the right direction - I'm trying to either source a replacement movement ESA 931671 Y2 or find an expert repair person who could simply fix the module for me. I'm guessing the module would be from the 80's or 90's. There are no obvious signs (acid spillage or track issues) on the movement as to why it's not going. I'm in Oz. Thanks.

[retroleds]

A picture always helps a lot(watch & movement). Consider that the more parts and such one has the less likely it might be they would both remembering every ESA movement's number.

[Kasper]

Hi Macski and welcome to the board.

i also had no idea how your watch looks like. And almost nobody here knows all the differend modules out of his/her head

Is it this one?

[MacSki]

Hi Macski and welcome to the board.

i also had no idea how your watch looks like. And almost nobody here knows all the differend modules out of his/her head

Is it this one?

Thanks Kasper - yes, that is the watch! It's the second Memosail LCD I have seen in a looong while

[retroleds]

Movement picture please. Would like to help.

[Old Tom]

From 1981- Cousins UK (the watch parts people) have the full technical manual available as a download. Belongs to that cluster of ESA modules that simply stop for no apparent reason and then restart a few months later! Usually the fault is battery leakage across the board and metal support straps intermittently "annoying" the oscillator circuit. I have found that this style of module should NOT be cleaned by dunking the whole circuit board into your favorite solution- instead use a small paintbrush and lightly dab the cleaner onto the board keeping as much as possible away from the "sealed" main chip. Similarly rinse off with a paintbrush and blower and then bake dry at about 60C. It's a very rare module indeed and you would be lucky to find another one!

[MacSki]

Movement picture please. Would like to help.

Ok, I've attached a photo of the movement. Thanks

[MacSki]

From 1981- Cousins UK (the watch parts people) have the full technical manual available as a download. Belongs to that cluster of ESA modules that simply stop for no apparent reason and then restart a few months later! Usually the fault is battery leakage across the board and metal support straps intermittently "annoying" the oscillator circuit. I have found that this style of module should NOT be cleaned by dunking the whole circuit board into your favorite solution- instead use a small paintbrush and lightly dab the cleaner onto the board keeping as much as possible away from the "sealed" main chip. Similarly rinse off with a paintbrush and blower and then bake dry at about 60C. It's a very rare module indeed and you would be lucky to find another one!

Hi Old Tom, thanks for your advice. Hmmm, could you be little more specific about the " favourite solution"!? For my "other" manual watches I'd know what solution to use but the electrics/electronics are something very new to me. And yes, I totally agree about this particular module being very scarce nowadays. I believe Memosail though was not the only co. which employed it in their watches so there must be some other branded watches utilising this movement? In fact, until a couple years ago this module was still available NOS from a supplier in Germany. Unfortunately, they have run out of stocks Cheers