• Projektor LG HS200g problem z DMD

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#1 Projektor LG HS200g problem z DMD


by DemoNx4 2 January 2019, 18:29
Witam, jakiś czas temu kupiłem projektor LG HS200g. Projektor nie uruchamiał się, problem był w jednej taśmie.

Jednak teraz mam inny problem, gdy uruchomił się okazało się że cały obraz jest w białych kropkach, nie zastanawiając się długo zamówiłem nowy układ z chin (8060-642AY). Po montażu po około 2 tygodniach pojawiły się pierwsze (tym razem czarne) kropki, napisałem do chińczyka który się bardzo zdziwił, ale wysłał kolejny układ za darmo i na drugim dokładnie ta sama sytuacja po miesiącu. Czy może być tak że projektor uszkadza tak szybko te układy czy może dostawca ma jaką wadliwą partię lub może ten projektor tak ma? Nie wiem czy jeszcze raz do niego pisać, czy jest sens reklamować.

Wydaje mi się że nie jest problem przegrzewania się, bo projektor chodzi bardzo cicho, nie jest gorący i jak włączy mu się obraz w full hd to skalowanie go męczy trochę i wkręca się na wyższe obroty. Jedyne co mnie dziwi to wentylator który wdmuchuje powietrze do środka, ale tak jest oryginalnie wstawiony więc raczej producent się nie pomylił ;)

Re: Projektor LG HS200g problem z DMD


by Google Adsense [BOT] 2 January 2019, 18:29

#2 Re: Projektor LG HS200g problem z DMD


by matic 2 January 2019, 21:10
Hello!

Check, if you can notice some tiny spots on the crystal of old and new DMD chip. To notice them, you have to look at the right angle to see them (if they are present), as in the picture below.

Image

#3 Re: Projektor LG HS200g problem z DMD


by DemoNx4 3 January 2019, 00:15
Yes, I know about it. Old and two new dmd chip have dots. My question is why both new chips have issue after few hours in projector. Maybe somebody have some idea what cause that problem :)

#4 Re: Projektor LG HS200g problem z DMD


by matic 3 January 2019, 11:17
Check, if the heatsink has a good contact with the DMD chip. Have you changed the thermal paste between the DMD chip and the heatsink? If there is a thermal pad instead of the thermal paste I would remove it and use a quality thermal paste only, if the thickness of the interface material does not affect to the installation of the heatsink.

#5 Re: Projektor LG HS200g problem z DMD


by DemoNx4 3 January 2019, 14:16
Original chip had thermal pad and for new chips I used new thermal pads. I can check it but now again I don't have good chip and I am scared order next new DMD. I must check it on old one and take a look what will be changed.

#6 Re: Projektor LG HS200g problem z DMD


by DemoNx4 13 February 2019, 21:45
Nothing changed - still issue increase. Thermal pad was changed to new better quality and I used additional fan in chassis for better air flow.
I don't have idea where is the problem.

Re: Projektor LG HS200g problem z DMD


by Google Adsense [BOT] 13 February 2019, 21:45
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