another synchronar to identify and resurection

[prasarn]

again!!!!!!!!!!!!!! hi every body,I just got dead synchronar and I want to know what is this model MK I ,II,III or IV ,and how to start for resurrection this corp body. step by step. best regards.
http://yfrog.com/0vmysynchronar4j
http://img31.imageshack.us/img31/6858/mysynchronar4.jpg

[charger105]

It's a Mk 1.
Here's a pretty good guide:
http://www.ledwatches.net/articles/Sync ... Change.htm

Good luck.
Rgds,
Andrew.

[prasarn]

great,thanks.I have one problem ,I still not have reed magnetic switch on this synchronar,how can i activate the switch by use bare magnetic?

[clockace]

hi, where are you? i would recommend getting on the synchronar section of this forum and start reading the posts on repairing them beginining with at least 2+ years back. there was a real flurry of repairers posting back then. do you have more than the module? peter

[prasarn]

I am in thailand,I don't think my country has this kind of watch,I am new for this forum and I am new for synchronar ,I can't wait such a unpredictable back order,so I buy the crops and looking at this .... huh no where to run
http://img842.imageshack.us/img842/8761/dsc02119x.jpg
http://img696.imageshack.us/img696/9986/mysynchronar3
my big problem now ,this watch have no reed switch.
I will try to read back from this forum,thanks.[/url]

[rewolf]

Your second image link above is broken, click here for correct link.
You can use any halfway strong magnet to activate the reed switch (if it is very quiet around, one can even hear a reed switch click - not sure if is audible in the potted module).
If still nothing happens, your watch is either discharged or dead.
Has the module been opened? Are still the original batteries inside?

[prasarn]

not open yet,
http://img69.imageshack.us/img69/1065/dsc02142j.jpg
http://img444.imageshack.us/img444/1739 ... ronar2.jpg

[rewolf]

not open yet,
http://img444.imageshack.us/img444/1739 ... ronar2.jpg

I'll leave this judgement to the experts.
But at least the batteries don't look like they leaked - that leaves good chances for repair.

[prasarn]

I try to charge and use strong magnet it has only a single dot led light up wow,ha ha but what next,may be I must to cut out this thing first,

[prasarn]

after I cut it out look like this but mispalce 1 reed switch any one have any ideas?
http://img830.imageshack.us/img830/1989/dsc02769q.jpg
http://img830.imageshack.us/img830/5964/dsc02770w.jpg

[charger105]

Hi prasarn.
Does it work ? It looks pretty clean, so chances are good. Looks like you also misplaced the 'lid' off the IC. There should be a gold lid over the IC for protection. It probably came off when the solar panel was removed. Be careful that nothing jabs into the IC area.

Did you 'misplace' the reed, or was it never there ? It could be a MkII, which only has 4 reeds in total. A MkII should only have 1 reed at the rear, but you have what looks like one reed plus the remains of 1 reed at the rear (ie. originally 2 but one is broken).

The case bottom says "Synchronar 1", so it should be a MkI, but who knows what they did at the factory. Perhaps they just used a MkI case bottom on a MkII.

Rgds,
Andrew.

[clockace]

it looks like a mkII to me. one leg on the rear of the chip does not look to be connected to anything. a clearer photo would help. and the lid to the chip is a most important thing to have on there. hope the chip hasn't been damaged yet.

jeff, what do you suppose the green wire is for on the lower edge of the pcb in the second photo? peter

[prasarn]

more pic to identify
http://img178.imageshack.us/img178/9827/dsc02900wq.jpg
http://img149.imageshack.us/img149/6825/dsc02901j.jpg
how many reed switch should have for this model MK I,II or III ?

[prasarn]

more pics
http://img821.imageshack.us/img821/5665/dsc02902k.jpg

[clockace]

pict 2902 shows what appears to be a trashed chip. the wire bonds look like they are broken. photo 2901 shows what looks like a broken rear reed. if that is the case that would indicate a mkI module as the mkII's had only 1 on the rear. the photo showing the top with 3 reeds would be correct for a mkII. the other photo [2770] isn't clear enough to determine if the 2 rear center tabs of the chip are soldered to a trace on the pcb. if one of them isn't that would be a mkII pcb. peter

[J Thomas]