Problem almost solved, but not entirely. ONKYO CR-725 shares some components and boards with ONKYO CR-315. NOT NCAF 8939 board, If anyone has the ONKYO CR-725 schematic any help will be greatly appreciated, particularly with the NCAF 8939 board
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bios321
Member
Last Activity: 02-24-2025, 07:21 AM
Joined: 09-16-2017
Location: warsow
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onkyo CR-725
Hello
I restart an old topic Onkyo CR-725 board NCDG-8932, if someone can tell me the value of q941, c941, r941 and d941. thanks -
Re: Strange relay Programmable outlet
Definitely it is an ELEWAY BF24-1A-H-S 24VDC. I have also found a similar problem on the internet.
[url]http://ugyotaku.web.fc2.com/yahoo2/PT50DW/PT50DW.htm[/url]
If you'll scroll down you will get to a picture of it.Re: Strange relay Programmable outle...picture of it.Re: Strange relay Programmable outletLeave a comment:
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Strange relay Programmable outlet
Hi all
The culprit ELEWAY BF24-1A-H-S 24VDC relay.
Item a programmable outlet Brennenstuhl dt v2. It just won't turn on and off when it should. The reset works fine but I do not hear the relay clicking on/off. I have two of these outlets, one works fine the other one not even close. I think it is the relay but I cannot find it to buy. Also I cannot find a similar one. I cannot find a datasheet for this relay. So I am stuck. Any help, any ideas will be greatly appreciated. -
Re: Help to unlock Epson projector EMP 835
Years have passed. The owner came back to my shop with a second projector (he brought for parts). I took it apart, switched the boards and voila! the projector finally works. Changed the lamp also and it works like charm. Case closed. But I am still intrigued by the boards of that projector. There has to be a hard reset somewhere on the boards, but it seems I cannot find it.Leave a comment:
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Onkyo cr 725
Hi everyone! I am stuck with an ONKYO CR 725. Someone brought it to my shop after trying to fix it by himself. It seems that some parts are missing and I cannot find the schematics for it. If someone has it and is willing to share it,Q I would greatly apreciate it. The missing parts are Q941 and R945 (any info about those two would be apreciated). But I am not sure that these 2 are the only missing parts. There was also some bad soldering that managed to erase/cut some circuits. This is the reason why I need the schematics. Many thanks in advance. -
Re: Help to unlock Epson projector EMP 835
I have powered the unit on connected GND to Reset, with some wires (previously soldered to those two pins) for a few seconds, tried again for a few times nothing happens, the image turns upside down, there are a few glitters but the system gives me the same message password protect. I have returned the projector to its owner. Anyway thanks guys for your help.Last edited by bios321; 10-20-2017, 03:47 AM.Leave a comment:
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Re: Help to unlock Epson projector EMP 835
Thanks STJ. I am out of the city for a couple of days, so I will return to my" shop problem" by Friday.Leave a comment:
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Re: Help to unlock Epson projector EMP 835
STJ what do you think about that ATN 45db041b SI reset pin? There are two question marks generated by the following info form the data sheet:
1 . The data sheet says When power is first applied to the device, or when recovering from a reset condition, the device will default to SPI Mode 3
2. The data sheet says that the chip has a Hardware Data Protection Feature
So the firmware will be protected in case of a reset? Or the reset will blow the firmware up, high in the sky?
How would you proceed?Leave a comment:
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Re: Help to unlock Epson projector EMP 835
Sir I am out of ideas at this very moment. And it is frustrating.Leave a comment:
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Re: Help to unlock Epson projector EMP 835
I have managed to get to the eeprom. It was well hidden on a second, smaller board underneath the main board. It is a ATN 45db041b SI. The data sheet is here [url]https://cdn.badcaps-static.com/pdfs/0703a7cae2f2bed9071a6cf880c46fa6.pdf[/url]. It is the CASON type. There seems to be a reset pin. I have 0 experience with such eeproms. Any suggestions? What can I do that will not involve a complicated procedure to rewrite the eeprom?Re: Help to unlock Epson projector E...as well hiddenLeave a comment:
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Re: Help to unlock Epson projector EMP 835
Is there a possibility to reach the After Service menu in the EMP 835 projector if it is hard locked? I have some second thoughts shorting the pins of the eeprom circuit. And I am not entirely sure that menu-esc-esc-right-left is the proper combination for getting to AS menu for EMP 835.Leave a comment:
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Re: Help to unlock Epson projector EMP 835
Hello stj. Great suggestion. Shorting SCL SDA like in Samsung tv sets, might work. Thank you. I will give a try. Do you have something else in your mind, a different solution?Last edited by bios321; 09-21-2017, 03:04 AM.Leave a comment:
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Re: Help to unlock Epson projector EMP 835
#budwich
Tried NUM +0000, NUM+1793, message is the same: "password protect. the projector operation will be locked. contact..." Also this message is shown as the initial screen. Practically, it starts with this message, there is no other screen. Whatever I do it seems I am stuck. I cannot reach the password prompt.
Someone suggested the "hammer" approach: to find the reset points on the motherboard (seems like an acupuncture
). Hope to find a service manual or some schematics.
Guys, to all...Last edited by bios321; 09-20-2017, 01:46 PM.Leave a comment:
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Re: Help to unlock Epson projector EMP 835
The owner provided me with the the remote. The user manual has been downloaded by me. Cannot find a service manual but I am still looking. The message is the same even after pressing the "enter" button for 7 seconds: password protect. the projector operation will be locked. contact...
Also tried to enter the AS menu with menu-esc-esc-right-left combination similar with other epson projectors. It does not work. Suggested owner to contact epson for a key as it happened in some other similar situations. He does not have the...Leave a comment:
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Re: Help to unlock Epson projector EMP 835
Thanks for advice. It does not work. I cannot unlock the menu. I am convinced that it is completely locked due to numerous (more than) 30 attempts. It seems this model has a counter for the number of attempts. After 30 attempts it locks itself. And i need to reset it somehow. Still looking, once again thank.Leave a comment:
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Help to unlock Epson projector EMP 835
Hello
If someone, somehow knows how to unlock an Epson Projector EMP 835 his/her suggestions would be more than appreciated. The person who brought it to my shop told me a story that involved a party thrown by his sister while he was absent, finding that his projector was locked after that party, and than a "hard lock" after he tried for a few hours to punch in some codes. He seems quite a decent person, I know a few things about him (small town indeed), nice middle class background, sort of bourgeois family, definitely does not look like a robber, and that Espson reached its... -
how to reset password for an Epson EMP 835 projector
Hello.I need some assistance on how to reset password for an Epson EMP 835 projector. The owner who brought it to my shop for repairs told that he was out for a night and his sister threw a party. The next weekend found his projector asking for a password and tried more than 100 combinations. Still projector locked itself. Any help will be apreciated. I cannot seem to find the PWD RESET on mainboard.
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