Although of projector " social status " cheaper and cheaper, the function is more and more powerful, but still have a few users, especially individual user, like look focusing to the middle of the market secondhand projector, after all such projector has appeal very much in price respect. But make function be not stabilized very possibly considering secondhand and umbriferous mechanic, and their quality also is uneven, for this we are choosing secondhand when projector, must hit the mark, grasp point of accurate choose and buy.
Pay attention to the spot to set a test
We know, a lot of functions of projector are to pass reasonable setting parameter to come to those who come out to reflect, if we be about to choose and buy in one's hand secondhand a lot of functions cannot pass projector if setting body comes out now, it is advisable that then such projector had better be touched less. Because we are met partly temporarily,cannot understand deep secondhand the setting circumstance of projector, when because this is in,the spot buys this product, we must be consulted in time, modestly to the salesperson, enquire to them such secondhand and umbriferous function denies the job that describes in oneself undertake demonstrating; normally in the environment in addition, to a few functions that can demonstrate, had better ask spot of salesperson one by one to undertake demonstrating, and cannot listen simply. For example, we are OK the spot checks secondhand whether can the projectile distance of projector satisfy us in the future use requirement; generally speaking, the projectile distance that projector of odd gun type plants often is completely fixed, what selecting this kind of kind accordingly is secondhand must consider cautiously when projector.
Affirm whether color output is even
To those 3 guns type secondhand for projector, after use period of time, color output often can produce inhomogenous phenomenon, medium a certain location often meets screen act to be caught to mirror by green and red, the visual sense that gives an audience so easily brings huge discomfort. Nevertheless, what output inhomogenous degree according to color is different, a such malady can not observe certainly when watching screen the first time, defend oneself very hard below the umbriferous environment with brighter light especially, and in outside light we can identify a bit dark environment clearly piece current and secondhand the colour output of projector is even. Inhomogenous to those colour output secondhand for projector, not only umbriferous demonstrated effect is not very good, and after be being bought, otherwise how long is in discard as useless condition, when once we discover what be about to buy a hand is secondhand,so projector existence colour outputs inhomogenous phenomenon, it is better to still had better leave it a bit further!