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I second all that, plus be careful not to press down the back plate too much or the pivots will break easily. Finding a battered watch with working movement is the common solution, but the 7t34 is a rare bird nowadays, at a fair price...

If your circuit is burnt then getting a replacement will be a challenge. Seiko designated the same circuits with a letter after the number A and B. The difference was the position of the holes on the circuit matching up with the plastic posts on the movement. This watch is a challenge to work on but not overly so. It's amazing how all the gears fall into place when the cover is put back on. Look for bent staffs on the rotors. Down the rabbit hole.

Did someone call me? :D I have a similar Seiko 7T34-6A90 which I repaired and now works flawlessly. Problems with these movements (as the whole 7Txx series) is that they are very hard to put back together, being 90% of the parts in plastic and very easily broken.. Check a post I made about the 7T32 movement (structurally similar to the 7T34) on another forum, with links to my videos where I tear it down: http://www.seiko7a38.com/apps/forums/topics/show/13166499-deep-inside-a-7t32-or-shiojiri-y182b-movement Hope you manage to find an donor 7T34 movement, since I believe your PCB is long dead... and probably the coils too. The coils are the same as the one on 7T32 movements, so you can find them easily.