Invictus gaining time

[Tiny]

So in my introduction post. I mentioned a Invictus watch that was turned down for repairs. So yesterday I looked at the watch again and found it was running sum 7 minutes per hour too fast. I think after looking around on the Internet the problem maybe the watch has been magnetised the watch is a

Invicta Grand Diver 3045 Men's Automatic Watch

 

This watch has never been opened or serviced This watch was purchased from Amazon December 2018.

[watchweasol]

Hi  The problem may well be magnetism causing the balancespring to stick the coils but this could also be due to oil /dirt/grease.  What we require is if possible some pictures of the watch its movement and a close up of the balance area and or the make/caliber number. Armed with that information the members will be able to assist you with the diagnosis and hopefully repair.      cheers

[jdm]

11 hours ago, watchweasol said:

 What we require is if possible some pictures of the watch its movement

These watches use an SII (Seiko) NH35. 

11 hours ago, watchweasol said:

and a close up of the balance area 

That may not be possible for the OP, being a diver's the caseback can be quite tight, so a good holder and case opener would be required. Also, the amount of gain is huge and may rules out a simple magnetization issue, however that can be cheaply tried out by the OP buying a cheap blue box demagnetizer, without opening up the watch.
o in the end the watch should be looked by a competent professional, with the hope that if it's a simple issue as demagnetization only or e.g. the hairspring jumped out oft he regulator he will request an honest fee for repair. 

[gbyleveldt]

Or, you can just replace the whole movement for around $50 and call it a day. I’ve been rebuilding a LOT of these lately (got a whole pile of damaged ones to practice on) and many of them had excess oil on the balance spring causing similar issue. It’s not the kinda thing most professional watchmakers would be interested in, so if you not keen on going down the watchmaking rabbit hole then it’s more practical to replace the whole lot in one go.

[watchweasol]

On 2/19/2022 at 9:46 AM, jdm said:

hat may not be possible for the OP, being a diver's the caseback can be quite tight, so a good holder and case opener would be required. Also, the amount of

Even changing the movement will require some investment in tools, plus module cost and then it may not be economic but if its a keeper breaking even is ok.

[Tiny]

I'm not sure what watch holder and case opener I have found the following on amazon https://www.amazon.co.uk/Battery-Replacement-Watchmaker-Screwdriver-Tweezers/dp/B09B4R1G33/ref=psdc_199486031_t2_B01N4BNKXA 

 

I do have this kit bought some time ago (bought for different project) 

 

https://www.amazon.co.uk/dp/B09LZ275SX/ref=sspa_dk_detail_0%3Fpsc=1&pd_rd_i=B09LZ275SX&pd_rd_w=eqLnA&pf_rd_p=828203ef-618e-4303-a028-460d6b615038&pd_rd_wg=QkYUU&pf_rd_r=553HNDD38YD64JS1NQQF&pd_rd_r=f9ffa274-935b-440c-9c4b-c58ba2449344&s=diy 

 

I am a bit of a collector of tools lol

[watchweasol]

Here is a sample  of back removers ,whether it is screwed on or a snap on back a combination the one s-1600  and the jaxa copy on the far right will remove most backs.the yellow handle and case knife  for span on's.   The movement holder of the type shown will enable a good hold on the case whilst undoing the watch there are others to be had . Look up watch tools on Ebay or Visit cousins uk  watch meterial house and look under tools.     cheers

[Tiny]

Hello all Well I didn't need any more tools.

I have repaired my watch and it was just magnetized, It is running smoothly now 

A really big thank you for every one that gave me advise I'm now going to repair a fossil watch with a cracked glass   

[LittleWatchShop]

Let me jump in front of the camera while the media are recording the story of the saved watch...

I have this very watch on my bench...belongs to my neighbor.  If you ever decide to open it, I suggest the three-prong back wrench because it gives more control than the two-prong one and typically this back is on pretty tight since it is a 300M diver.

Once you open it, you have to worry about water proof being compromised.  I had to go through several iterations with this one...putting it in the chamber to test and then re-coating the gasket and trying again.

Regarding magnetization...I had an ETA 2824 that I serviced the other day and it was exhibiting a similar behavior, but intermittently.  This, after a full service.  I demagnetized it and the problem went away!

[Tiny]

I have just ordered a three prong back opener before reading your post Thanks for the great advice

 

[Tiny]

Hello all I hope you are all doing well and not spending to much time on your hands and knees lol

 

My new toy has arrived a Timegrapher like many I bought the Weishi 1000 simple machine a bit like me. 

Also like most I don't really understand the readings I'm seeing and I hope some one will help me under stand the readings and explain when a watch needs a service other than a watch isn't running or running fast or slow 

in my images the TG has found the beat @21600 which is correct amplitude is set to 52 deg 

it also looks like the watch is performing quite well from -1 to 0 seconds lost per day and beat error the same -1 to 0 so would I be right in saying this watch don't need anything but enjoy wearing it.

 

But what would the read out be if it needed a service?. 

[watchweasol]

https://r.search.yahoo.com/_ylt=AwrIQdeLh1Fie5UAMnx3Bwx.;_ylu=Y29sbwMEcG9zAzEEdnRpZAMEc2VjA3Ny/RV=2/RE=1649539084/RO=10/RU=https%3a%2f%2frwg.cc%2ftopic%2f143934-how-to-read-timegrapher-results%2f/RK=2/RS=GRG9Fyw9lJ2Bdm9B9zNO4jZYdeQ-

Some helpful information to be had here.

[watchweasol]

ch to be gained from this publication in interpreting the results of the timing machine. and of the poeration of watches.

Witschi Training Course.pdf