SOURCE: BINOCULAR ALIGNMENT
Up close to the eyepieces under the material that covers the binocs. You have to peel away at the material to get to them, or look for the splice in the material which is very hard to see.
SOURCE: zoom lens loose in tasco binoculars
Best to take this to a repair agent as there are inherent problems in trying to fix these by yourself. Main one being zoom registration between both sides of the binocular.
SOURCE: I have an old tasco 7x-15x35 zoom binocular.
You can't.
Tasco optical products are very cheaply made items, usually bought direct from whichever factory already makes the same or a similar model and then Tasco have their badges and packaging added.
They are consumer grade models which are not designed with longevity or repairs in mind; they're worth little when new and almost without value as used items.
The only repairs which can be done are by Tasco themselves whilst their products are under warranty. Except for the most minor of repairs, a warranty claim will simply involve exchanging the faulty item for a new one as any labour expended in repairs will often cost Tasco more than the wholesale price of a new unit.
Your only fixes are to live with the missing eyecup; to visit a binocular repair shop (not exactly commonplace) and see if you can buy an eyecup which can be adapted by yourself to fit; or to replace yours with another pair. You'll usually find that there are plenty for free on your local FreeCycle or Freegle group but they'll often have the even worse fault of a broken eyepiece yoke. But the price is right so it doesn't really matter if you have to collect five or six pairs before getting a good pair...
With all due respect, 7x-15x35 are going to be optically atrocious, so replacing your current pair is not a bad idea.
SOURCE: two rubber eye pieces for Tasco 6x.18x35 triple zoom binoculars
Link
Hi,
Your binocular might be needing some repair or material replacement. Kindly refer to above link to contact Support Team of Nikon
Thank you.
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You may well find this information is contained within the manual
Might be able to contact sellers on eBay and other sites to ask if batteries are not in this vintage set of binoculars.
Example:
https://www.ebay.com/itm/401707281600?ul...
I have the original manual, but it is silent regarding type of batteries to use. AS batteries for but don't work, I am going to try CR123A batteries. I'll add an update if they work. Thanks for the responses.
I have model 108 at it uses 1.5V AA's
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