Are there Dead pixels

I've had mine just long enough to be outside of the warranty coverage and I've developed 4 dead pixels (more to come). When I contacted Optoma they told me I can send it back to be repaired but it'll be out of my pocket. Typically the part that goes bad on these is what's called the DMD chip and Optoma informed me it'll be around $800 just for the part if that is the case before labor. If you search the web this is a common problem which is frustrating since this isn't a normal $400-600 projector. I've heard laser projectors aren't as bad since they aren't the same setup, but they'll also cost you twice as much.

Does it have video quality upscaling capablility? to improve 1080p source video.

Yes, it has upscaling. It can upscale to 4k UHD.

Can you use low 4ms response game mode and HDR at the same time?

No. The HDR is for 4k mode only.

Does this projector have a tripod mount on the bottom?

Thank you for your interest in the UHD35STx. This projector does have a triangular mounting pattern on the bottom. If you have any further questions, please contact Optoma technical support at 888-289-6786 Monday - Friday 6 AM - 5 PM PST for further assistance.

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Optoma UHD35STx Short Throw True 4K UHD Gaming and Home Entertainment Projector 3,600 Lumens 240Hz Refresh Rate and Ultra-Low 4ms Response Time

Product ID: 511599856

Details

Brand
Optoma
Connectivity technology
RCA
Display resolution
3840 x 2160
Recommended uses for product
Gaming
Special features
4K UHD Short

🎮4.2ms ultra-low input lag

💡3,600 lumens ultra-bright output

🖥️True 4K UHD 3840x2160 resolution

Description

🚀 Elevate your game and binge in 4K brilliance — don’t just watch, dominate!

MASSIVE SCREEN IMPACT - Project up to a jaw-dropping 300-inch display to transform any space into your personal entertainment arena.
ULTRA BRIGHT VERSATILITY - 3,600 lumens brightness ensures stunning image quality whether in a dim home theater or bright living room.
CINEMA QUALITY BRILLIANCE - Immerse yourself in vibrant HDR10 & HLG enhanced visuals with 8.3 million pixels delivering razor-sharp 4K Ultra HD clarity.
LAG FREE COMPETITIVE EDGE - Experience lightning-fast 4.2ms response time at 1080p with 240Hz refresh rate for blur-free, ultra-smooth gaming.
PLUG PLAY PORTABLE POWER - Compact and easy to set up with HDMI & USB connectivity, perfect for gaming consoles, laptops, and smartphones on the go.

The Optoma UHD35x is a portable 4K UHD gaming projector delivering 3,600 lumens brightness, ultra-low 4.2ms input lag at 1080p, and a 240Hz refresh rate. Featuring HDR10 & HLG compatibility and UltraDetail technology, it projects stunningly sharp, vibrant images up to 300 inches, making it ideal for immersive gaming and cinematic experiences in any environment.

Specifications

ASIN	B09XVNJNXT
Additional Features	4K UHD, Short Throw Projection
Antenna Location	Gaming
Best Sellers Rank	#45,325 in Electronics ( See Top 100 in Electronics ) #352 in Home Video Projectors
Brand	Optoma
Brightness	3600 lumen
Built-In Media	User Manual
Color	White
Compatible Devices	Gaming Console, Television
Connectivity Technology	RCA
Contrast Ratio	1000000:1
Control Method	Remote
Controller Type	Remote Control
Customer Reviews	3.6 3.6 out of 5 stars (35)
Display Resolution Maximum	3840 x 2160 Pixels
Display Type	DLP
Form Factor	Portable
Hardware Connectivity	HDMI, USB
Item Dimensions L x W x H	31.5L x 27W x 11.5H centimeters
Item Weight	4.65 kg
Lamp Wattage	240 Watts
Light Source Operating Life	10000 Hours
Manufacturer	Optoma
Maximum Image Size	300 Inches
Maximum Throw Distance	3.3 Meters
Mfr Part Number	UHD35STx
Minimum Image Size	36.43 Inches
Minimum Throw Distance	0.4 Meters
Model Name	UHD35STx
Model Number	UHD35STx
Mounting Type	Tabletop Mount
Native Resolution	3840 x 2160
Number of Items	1
Picture Quality Enhancement Technology	UltraDetail technology
Projector Maximum White Brightness	3600 ANSI Lumens
Software Update Supported to Date	unknown
UPC	796435814533
Unit Count	1.0 Count
Video Encoding	HEVC
Voltage	240 Volts
Wattage	310 watts

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