This expertise laid the foundations for the emergence of one of the world’s largest manufacturers of watches and movements. From research and development to global service, every quartz and mechanical movement receives our utmost attention in terms of both materials and quality. Precision, reliability and level of performance are the key. View recent Jules Jurgensen questions, problems, & answers. Get free expert DIY tips, handy support, troubleshooting help & repair advice for all Jules Jurgensen products.
The first electric movement to bear the “ESA” name on its plates was the ESA 9150 or “Dynotron”. This was a Fixed Coil, Transistor Controlled Balance type movement and appeared in 1968; it was the worlds first movement with a balance that employed a transistor. The Dynotron range continued through to. I will say that these ESA electronic balance wheel movements actually did have a decent window of time when they were relevant, with these 13 jewel versions being introduced in 1967 (and produced through 1970), while a later version with 7 jewels (ESA 9157 – 9159) was produced at least through the mid-70s. The Spacetronic model in this post is from the early 1970’s, a period when the line between mechanical and electric/electronic watches was blurring, resulting in hybrid calibres – battery powered watches with a traditional mechanical escapements. The calibre inside this watch is one such hybrid, the ESA Cal. 9150, also known as a.
Esa 9150 movement circuit board not stable. 0; Sign in to follow this. Service manual attached on page 6 item number 13 is the dampening test. Esa 9150.pdf. Esa 9154 is almost identical to the watch you have the test is the same. So the one that I grab hasn't been serviced in a very long time. Re: Esa-9154. Originally Posted by Eeeb Well, you will probably not recover the cost of repair by selling the watch. Folks generally collect these because they are arcane and interesting not because they have a great deal of intrinsic value. In another ESA 9154 movement I have, or two, changing a battery in the movement does not get it to start. Tapping it, or flicking the balance wheel does not help. In these cases, I presume the electronics are defective. Is there a method to troubleshoot these movements? I know how to use a VOM. What is the most common failure of these movements?
Esa 9154 Service Manual
I bought this watch expecting a parts watch, closer inspection it’s actually a new old stock watch and I think I can bring it back to its former glory. The original sales label still attached.Case back has the characteristic lid for changing the batteries.I eventually figure out how to open the case back, revealing the movement. Hello Mitka and Christian, you have a new fan. I have been watching your exploits for a while and I am most impressed with your work. So refreshing to find quality and integrity, These movements were not much more accurate than a good automatic model, the only advantage was that you could leave them in a drawer for days or weeks and they would still be telling the right time. They had a period of popularity in the ’70s, I think I have seen them in mid price watches such as Avia.I notice the battery hatch on the Alpina has 12 graduations and an arrow.
Could this be to act as a reminder of the month that the battery was replaced? Hey Mitka, Really nice job! Electric and Electronic watches are a bit of a niche specialty of mine (although I’ve not sent any to you for service yet), so it was good to see a Dynotron movement being worked on here. I will say that these ESA electronic balance wheel movements actually did have a decent window of time when they were relevant, with these 13 jewel versions being introduced in 1967 (and produced through 1970), while a later version with 7 jewels (ESA 9157 – 9159) was produced at least through the mid-70s.
With the early quartz movements being introduced to the mainstream in the 1973 time frame, that’s almost a decade of iterations of this movement being used across a WIDE range of manufacturers during that period. So, it wasn’t quite obsolete as soon as it appeared! These electric watches are weird and wonderful things They have one huge disadvantage, and that’s the weight of the balance (as it has to contain magnets), so they aren’t the most accurate watches around. Every time you turn the watch, the balance goes haywire, as the large weight kicks in. For something with a transistor in it, that is a bit disappointing, so as soon as quartz movements hit the market, these movements where dead in the water.
Esa 9154 Service Manual Pdf
Battery life will also be under one year, as power consumption isn’t that low, so a tuning fork watch (made at the same time) is far more desirable all around. An interesting phase in watchmaking, but a dead end nevertheless. But any collector should have one of these, as they will become rarer and rarer as time eats the circuit boards!
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Esa 9154 Service Manual Pdf
