This will be more of a stumble-through than a walkthrough, since it's my first watch disassembly (and hopefully reassembly). I plan to do it as a series by replying to this post, so I can get feedback and help as I go (if anybody is interested). I hope that's OK (it will be slow going). I couldn't find any walkthroughs of a Venus 170, so at least I'll contribute some pictures with what I learned along the way.
The watch: Purchased from goodwill online. Broken/yellowed crystal, hands bent, corrosion on the case and chrono buttons, dial very marred. Some power in it, as pressing the button moved the chrono second hand until it bumped against the main minute hand, which was bent. Main second hand bent to the dial as well. I did not wind the crown. Balance oscillates.
Watch arrived with the back off. Crystal removed with tweezers, and hands removed with the movement still in the case so I wouldn't damage them by fumbling around. Once I had the case screws out I was expecting a movement ring, but there was none. I figured out the case has a bezel and the movement comes out the front. Couldn't find my bench knife but the bezel came off easy with some pressure from a screwdriver at a gap near the 2oc lug. Once the movement was out I was expecting dial screws on the side, but there were none, so I had to learn about dog screws and figured out their locations by studying the backs of cal. 170 dials for sale on ebay.
Note the chrono bridge looks unlike any other pictures of a 170 I've found online (including the one other Empire 170 I found), and it's not stamped. Venus logo is not on the balance, but on the other side of the movement (see attached). Perhaps this will help date the movement?
Here are the results of these first steps with additional pics attached.
I wonder if you have everything back as it should? You pull the stem out to set time. Then wind it until it shift date. Put the hour hand at 12 a clock . Wind it one more time 24 hours and see that it shift right. With the hour hand at 12 set the minute hand over the hour hand. Then it should work. If not there is something wrong.
Some movements will "quick change" the date by pulling crown out to first click (2nd position?), then turn the crown counterclockwise. I'm not sure if your ETA does that, but I'm pretty sure that many ETA quartz movements use this feature. Good luck.
Just look at this. Marriage its more like a divorce. See how the dial has been butchered in the centre to accommodate the centre wheel, which the hands are attached.
I don't recall what's in there but DeCarle is normally a good source of info. Jendritzky's book is pretty good, I haven't seen it yet but Archie Perkins is a sort of lathe guru so I'd recommend his book without hesitation. I haven't seen any youtube videos that show actual good technique, most are pretty hackish. AWCI has some good videos from Ron DeCorte.