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Hi, can someone here help me out with a watch repair?

I took the back off a Tissot watch, for the life of me couldn't get it back on, in the ensuing struggle i knocked the crown off,one of them i wished i hadn't took it on.

 

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Edited by St.Am92
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The stem appears to be snapped close to the crown and the tube is damaged as it’s come away from the case.

the red gasket needed to be put onto the case back before attempting to close.

looks as though you need a new stem and crown and possible new tube if it’s damaged.

easy fix for anyone who does watch repairs.

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Difficult to say without it on the bench but I should be able to sort that out.

id need to dissolve the stem out the crown, replace or repair the stem and pendent, fit a new red seal and close.

 PM me and I’ll give you an estimate & address

Lee

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On 10/6/2020 at 8:49 PM, Lee said:

Difficult to say without it on the bench but I should be able to sort that out.

id need to dissolve the stem out the crown, replace or repair the stem and pendent, fit a new red seal and close.

 PM me and I’ll give you an estimate & address

Lee

I've come across stems snapped off flush with the crown before and given up on them - how do you dissolve the stem out of the crown? I'd love to know!

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there are two ways the first is with aluminium potassium sulphate & mixing it with water and using a microwave to keep it hot & the second is using Bergeon 4503-0050 neither are quick and both take a bit of trial and error to get to work.

I've done hundreds and only had it fail once & that was a watch for a forum member once (typically!) But boy is it satisfying when it works!

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4 minutes ago, Lee said:

there are two ways the first is with aluminium potassium sulphate & mixing it with water and using a microwave to keep it hot & the second is using Bergeon 4503-0050 neither are quick and both take a bit of trial and error to get to work.

I've done hundreds and only had it fail once & that was a watch for a forum member once (typically!) But boy is it satisfying when it works!

I've done it a couple of times with aluminium potassium sulphate but I use a jar in a tommy tipee baby bottle warmer. Takes a few days usually.

Other option, if you know a jeweller who uses acid to clean flux of the metals when soldering, will be a lot quicker with a strong acid solution, but very dangerous if you're not used to using acid!!!

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7 minutes ago, Michael said:

I' I use a jar in a tommy tipee baby bottle warmer.

LOL I use a cadbury chocolate warmer, I boil it in the micro wave every hour or so & put it in the warmer in between

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On 10/16/2020 at 10:04 AM, Michael said:

Stems are mild steel so are softer than the crown

Stems are not mild steel but are a steel of sorts, the reason it works is because most watch cases be them gold or stainless steel are no corrosive, this works be corroding the stem out of the crown.

On 10/16/2020 at 7:51 PM, da miller said:

use a bench drill out in seconds

 

not always possible, especially if your talking a stem sticking out slightly in a gold crown. 
 

the dissolving method takes away any risk.

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