Hi,
Having got my fans in place and the inside painted black I was finally in a position to switch on my projector in a near completed form.
I decided to put an aquarium thermometer with an external probe between my unsplit fresnel and LCD to get an idea of the temperature occurring there.
Having run the projector for half an hour the temperature seemed to have steadied at 33 degrees Celsius (approx 91 farenheight). This was directly in front of the lcd in the middle, behind the fresnel. Note that there was also a fan sucking air from behind the LCD (on the lamp side) which obviously would not have greatly affected the probe temperature but probably would have reduced the actual lcd temperature.
Regardless, does this seem like an ok temperature for the LCD? It is a hami 8" and I cannot find any operating temps for it, but in general does this sound ok or shpuld i try and do more?
Thanks,
Matt
Having got my fans in place and the inside painted black I was finally in a position to switch on my projector in a near completed form.
I decided to put an aquarium thermometer with an external probe between my unsplit fresnel and LCD to get an idea of the temperature occurring there.
Having run the projector for half an hour the temperature seemed to have steadied at 33 degrees Celsius (approx 91 farenheight). This was directly in front of the lcd in the middle, behind the fresnel. Note that there was also a fan sucking air from behind the LCD (on the lamp side) which obviously would not have greatly affected the probe temperature but probably would have reduced the actual lcd temperature.
Regardless, does this seem like an ok temperature for the LCD? It is a hami 8" and I cannot find any operating temps for it, but in general does this sound ok or shpuld i try and do more?
Thanks,
Matt
hi Matt (from another matt !)
don't know how useful this'll be to you, but i just measured the temp of my laptop tft (with an infrared thermometer), which i've been using for over a year, and the laptop has always run a bit hot (knackered fan) - the highest temp i recorded on the tft was 37.5 deg c, and so far no lcd degredation !
perhaps you should get an infrared thermometer (very useful) and do periodic checks at the lcd itself...if your lamp is giving out uv or ir, then you may be getting more heat in your tft than in the air in front of it - of course a good long term fix for that may be to think about eventually replacing your lamp with leds, i'm going to do this with my infocus lp240 soon... led...yes you can !
don't know how useful this'll be to you, but i just measured the temp of my laptop tft (with an infrared thermometer), which i've been using for over a year, and the laptop has always run a bit hot (knackered fan) - the highest temp i recorded on the tft was 37.5 deg c, and so far no lcd degredation !
perhaps you should get an infrared thermometer (very useful) and do periodic checks at the lcd itself...if your lamp is giving out uv or ir, then you may be getting more heat in your tft than in the air in front of it - of course a good long term fix for that may be to think about eventually replacing your lamp with leds, i'm going to do this with my infocus lp240 soon... led...yes you can !
Thanks for taking the time to do that, it is appreciated.
I have added antother blowing fan to the back compartment and the temperature now stays below 30 deg c...which is nice.
I really can't spend anymore on this project for now as I have a kitchen to finish in my house and my girlfriends priorities are all messed up 🙂 so no IR thermometer for me. However, the probe i am using to sense the temperature is designed for an aquarium so is surrounded by plastic to make it waterproof. Hopefully this will heat up from IR to around the same as the LCD so should be a reasonable indicator.
I am going to leave it to run for a while now and see what happens.
If anyone else has any thoughts on the temperatures i have given they would be appreciated,
Matt
I have added antother blowing fan to the back compartment and the temperature now stays below 30 deg c...which is nice.
I really can't spend anymore on this project for now as I have a kitchen to finish in my house and my girlfriends priorities are all messed up 🙂 so no IR thermometer for me. However, the probe i am using to sense the temperature is designed for an aquarium so is surrounded by plastic to make it waterproof. Hopefully this will heat up from IR to around the same as the LCD so should be a reasonable indicator.
I am going to leave it to run for a while now and see what happens.
If anyone else has any thoughts on the temperatures i have given they would be appreciated,
Matt
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