Infocus IN72-IN74-IN76 - Page 142

I really think it is something worse I can't even get it to go green when it gets plugged in... It does nothing but what I explaind on previous post. But I don't get it not one bit. I went over both boards and can't find anything wrong.... They both look brand new just a lil hot spot under were the pink wire goes for the bulb buy the transformer.. and its not bad at all fuses are good I think I got a paper wate :-(

Could anyone tell me on the first bord were the 120 v plug in is... What the output voltage on the black and yellow wires is supposed to be I'm getting on my meter on the black and yellow 115.3 v dc? That seems wrong when it says on the bord putput voltage 75 v dc... Then when I go frm the ground to black or yellow im getting 65.7 v dc.. are the black and yellow both hot? Be nice if I could get my hands on a schematic?

Yikes - I go away for a few days, and you're already tearing into the hardware!

So the firmware update didn't take, eh? Bummer. Let me see if I can track down the factory reset button magic, as suggested by cavu... We'll see if we can't breathe a little more life into your paperweight!

Aha! Try this post

I flashed my IN76 without any problems; you have to use a laptop or computer running Windows XP or it won't work. I tried with my laptop running Vista and it would not work. Good Luck!

As cavu notes, that's a complete load of BS. Their own support page for the IN76 clearly notes that the version 2.8 firmware fixes, "System lockup on boot-up when only first item in Source Enable menu (HDMI) is enabled (all others disabled)."

The 72/74/76 models are old enough now that I'm not totally shocked the current techs are unfamiliar with the issue. Still, for them to claim it was a rumor is a bit disheartening.

I'm not convinced you have a hardware failure. Try the reset method and see where that gets you. I'd hate for you to tear into the thing, only to find out all the components are fine.

--Brett

Can I say thank u for this post! You just saved me a ton of money!

Omg you guys r great! Thank-you everyone for your time and help.. you saved me a lot of money it was the bug..... I got it to update by holding down arrow keys.... I don't kno how to thank-you all for your help! I kind of feel stupid lol!! Thank you all kindly... Dustin

Glad to hear you're back in business, Dustin! Don't feel stupid, as it was a rather non-obvious solution.

. I just couldnt believe how easy it was... And I will say with the update pic is better and brighter then before.. again thank you all for ur help

Does using high power on the in72 take more life out of the bulb or hurt the unit in anyway I've never used it....

High power will give you more brightness thus increasing heat output. At the same time the speeding up of the cooling fan increases friction, so it does hasten the end of the bulb and spinning of the color wheel, at least eventually.

I have had for some time the InFocus 76. It has served me well but I am anxious to moveup to a new & better not too expensive projector.
Has anyone actually compared or seen the IN76 vs. the new Epson 5010/6010. I'm concerned that its 2D might not be as good as the IN76. I've read good things here and elsewhere that the Epson's 3D is outstanding but 2D not so much. If its 2D is at lease as good as the IN76 I'm thinking of making the change. Any opinions?
Thanks!!

James ..... Thanks for letting me kno that.... Pretty much what ur saying is don't touch it! Lol no prb. I cut out the sides on mine put an ac screen type filter on the inlet side also added 2 more fans that stay running even when not in use to keep power supply cool b/c it still got warm when it was not in use. This projector still has a great picture... Especially when I watch blue rays 1080p...

I'm in need of a OTA Television Tuner for My IN72. Any recommendations? Would like to be able to connect via HDMI. Thanks for any and all help!

The only thing that I kno of is TiVo series 4 DVR ... It's what I use and it does both ota and cable... I don't kno really besides u putting in a tv card in ur pc with a video card that has dvi or hdmi out put on it...

Fantastic I've just fixed my iN72 after reading this post, We had a power cut and the PJ wouldn't power back up afterwards, fans would run for short while and the LED flash red for a nano second then nothing, did the firmware upgrade and its back, just in time for Christmas, mind you it is supposed to be the end of the world today so my joy maybe short lived

Hi,

I've got an IN72 with the infamous 510-2111-01 power/ballast board and a blown fuse. The capacitor which usually fails is ok (C512) and the problem seems to be lots of shorted components around the transformer. I'm going to attempt a rebuild but not sure about some of the parts which have failed. Does anyone have the schematic for this PSU or would be able to confirm the values? The service manual I have for IN72 doesn't have any schematics

Q652 = K2647 MOFSET Transistor, 3 pin. Nearest I can find is 2SK2647 just wan to be sure this is ok.
R663 = Has 4 Bands: Brown Black Gold Gold. Implies a 1ohm +-5% resistor but not sure what wattage.
C653 = 471k, 2kv capacitor.
D652 = RLZ36B, SMD Zener Diode. Marking are Orange Brown Green

Many thanks in advance.

alls i can say (And I'm not trying to be smart) Is good Luck Trying to find one.. you are better off to buy a new one from projector doctor. but if you can find out the parts you need and you can fix it go for it... if not then by a new one bud they are not that much....

My IN-72/74 or 76 died today.
I don't exactly know the model as it came with the house with no documentation whatsoever.
I created an account on the Infocus website today and registered the product. The S/N should make clear what type it is.

I read big parts of this thread but couldn't really find my exact symptoms.

The only thing the PJ still does is that the moment I plug in the power cable the led lights up for a millisecond (yellow).
Pushing the power button is not giving any response (no fan, no led reaction).

I read that the fuse is a serious problem with thisPJ but as the led lights up for a millisecond the moment I plug in the power cable I don't think this can be the fuse.
Can this be the capacitor?

One more question: in the current situation (see previous post) would I be able to do any kind of reset?

Sounds like the common issue where it won't start due to a software problem where only 1 input is selected. I had an IN72 projector with same symptons (flashing light for split second when plugged in but then doesn't go green). Upgrading it to the latest firmware (version 3.0) fixed the issue. You can download the firmware from Infocus support site but you need a M1DA cable with USB and a PC windows XP to install it (see previous posts). Not sure if there is a way to do a factory reset by holding down the buttons when its plugged in. There is an earlier post which seems to detail this so maybe give that a go first

http://www.avsforum.com/t/620726/infocus-in72-in74-in76/4110#post_16773740

Thanks for the reply. I read about the firmware problem but for some reason I didn't make the link to my problem. It makes sense as that is something I changed in the settings. It gives me hope the firmware update could solve my problems.

Concerning the reset. I read the post you're referring to but this works only if the system actually starts. The keys are navigating the menu.

So:
- Computer with XP : glad I still have one
- M1DA cable : I might have one but I'm not sure if it has the USB plug as well. (seems pretty exotic this cable)
- Firmware download : looks I will have to wait for a reply from infocus about the type of beamer I actually have. (based on the S/N I send to them) I suppose it's the IN72 but I don't want to mess things further up by installing uncompatible firmware.

Hi. Yes should have properly read the post first! But the cable is widely available on places like eBay. Also the firmware on infocus site is fine so just download and install that.

Ok so replaced my last bulb, and to be honest noticed a lot of flickering on that, due to age I thought.

Now however, with the new bulb, the picture looks stunning, but the flickering is unbearable. It's actually giving me a headache. I have cleaned the PJ and the colour wheel and run the bulb in HP mode for over two hours and still no joy.

I hear there could be an issue regarding power - but have no idea how to check this?

I've also noticed a large amount of 'hot-spotting' on my screen when none was present before.

It's also worth noting my last bulb physically blew up without warning at 700 hours.

Is my pj doomed or is there anything else I can do?

Many thanks

Hi. If you`re handy with a soldering iron only thing i can suggest is changing C512 (100nf, 450v) on the ballast and see if that helps

Beginning to see a flicker on my screen from my IN76 projector. If I go to high power it goes away for a while but then returns. Switching back to low also makes it go away faraway for a while then it returns. ANY IDEAS. Bulb is out of warranty but only a few months old.
Thanks!

I would leave it on high for an extended period of time to see if ti will burn off the secondary arc point. The lamp is an arc light so high voltage jumps a gap between 2 electrodes within the high pressure vessel. If the lamp is not made correctly or with the proper materials the arc can happen from 2 places and bounce back and forth between them making it flicker. If it is not an OEM lamp, this is the kind of thing that is to be expected from a knock off. If it is an OEM then it could just be a bad one. Also a weak ballast can cause the lamp to flicker. I am no expert on the subject but this is the info I have gathered over the years from the experts. Good luck!

Thanks for the information! I appreciate your help!