7.0-HDMI-HR-RSXP-CTU not working
Hi
I just installed a 7'' 7.0-HDMI-HR-RSXP-CTU display and it doesn't work as advertized.
- The display itself is detected as an generic 640 x 480 display under windows 11
- it only appears after system boot up (the boot screen is not visible and the screen is blank)
- once booted, display covers only half of the screen
- hardware I.D. is "MONITOR/MS0001"
- device description is "digital flat screen (640x480 60 Hz)
- supply voltage is 5.14Vcc under load
Is it a known bug or malfunction ?
Marc
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Hi Marc,
There seems to be a conflict with the EDID timings. Do you have another display you can plug in? Please take a look at our user guide pages 4 and 5. This display is 1024x600 pixel resolution. Are you able to change those settings in windows?
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Hi
First of all, thanks for your attention. It's really comforting
Resolution settings in Windows are greyed, display ID cannot be changed, I tried everything you could imagine. The display is stuck with a 640x480 resolution and no param could be modified.
Changing with another display (let's say1024x768 or any hight def 4K screen) works perfectly. This is definitely a display problem, not a kernel issue.
Marc
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Hi Marc,
There is a possibility that the EDID got corrupted when plugged into the system. Please reach us at nhtech@newhavendisplay.com so we can provide the next steps.
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Many thanks
I just sent an email to the tech team
BCNU
Marc
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Thank you Marc,
We received your email.
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Hi Marc,
did they help you? I have exactly the same problem and have been contacting the support. Also using Thetis for Andromeda HI
best regards,
Volker
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Hi Volker,
Thank you for your Inquiry.
Could you please share the backside picture of the non-confirming display to nhtech@newhavendisplay.com so we can assist you with the next step?
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I sent it 5 days ago. Any news?
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Hi Volker,
I believe there is communication issues ongoing as we haven't received your email. Could you please forward your email again to us or please call to get in contact.
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I sent it for the second time.
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Hi Volker,
Unfortunately, we haven't received anything. We will be emailing you directly.
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I have exactly the same problem and have been contacting the support.
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sob... it's not a bug, it's a feature. (or a misconception problem imho)
Could it be possible to find a technical solution to avoid a costly round trip and boring custom paperwork given the already relatively high price of the component and error recurrence ? we'll all be really grateful
Marc0 -
Hi Marc, Volker, and Demicropz,
We have tested this part here with Win11 just to confirm that the display works properly with that OS, and confirmed that the display worked without any issue. While we understand that sending the display to us will be costly due to shipping, we would need to have the display here to evaluate and determine the cause of this issue. If you have purchased the display from a distributor rather than directly from us, then you could reach out to them for an exchange. This will enable you to get a replacement of the same from your distributor much quicker, without costly shipping, and we will get the original unit from the distributor for analysis. If these are not possible options, you can program the EDID values to the PCB. The EDID timings can be found on the datasheet and the pins to connect to are shown below.
You might need to purchase the cable TC2030-PKT-NL to properly connect to those pads.
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Hello Engineering Support Team,
thank you for information.
- Programming the EDID values looks like a good idea, but what additional hardware/software (besides the TC... cable) will be needed for this?
- I have two displays showing the same behavior. To which shipping address can I send one for your tests? And when I get it back, is it possible that this odd loss of EDID might happen again?
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Hi Volker,
You would have to create code to write the timing values to the EDID EEPROM IC. With the cable suggested earlier, you should be able to connect jumper wire to your microcontroller. You can send the displays to 2661 Galvin Ct. Elgin, IL 60124 USA. At the moment we are not sure what caused the display to behave this way. Once we receive the displays we will try to replicate the issue.
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2661 Galvin Ct. Elgin, IL 60124 USA ist the postal address of the company.
- to which department or person it should be addressed?
- is there anything like an inquiry number oder reference?
I am afraid that the displays will circle around in your company without any further reference.
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Hi Volker,
I will email you this information.
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Hi All
for European people/Ham who don't have an I2C programmer or the jtag connector, I can send for free a flashed 24LC02BT. It will be far less expensive than a Fedex round trip, and changing a sot23-5 with a reworking station is easy as pie.
@Engineering support : May I suggest to add a kind of solder jumper from the WP pad to Vcc to avoid such a eeprom corruption once your EDID has been flashed ? It seems that the pull-down resistor on WP makes the eeprom rather sensible to gliches.
Kindly yours
Marc f6itu
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Hi Marc,
Thank you for your patience.
According to the EEPROM datasheet, the WP pad can be connected to VCC, then the memory will be write-protected. Unfortunately, we would not recommend modifying the PCB, as it will void the display warranty.0
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