Help converting BW screen to 5V
Help converting BW screen to 5V
Hello Everybody.
I bought the BW auto monitor from Amazon.
My board looks like the "Variant 10" in the wiki, but the voltage regulator is different (the one in the wiki is JWBV795D).
I checked the 6-pinned chip labelled "JWBV604D" on my board looking for the voltage regulator.
I searched online for the datasheets without success. I supplied the board with 19V and in the image I added the voltages that I measured on each pin.
In the wiki, the 5V was soldered to pin 6, but my pin 6 has an output of 3.3V.
Will the conversion work?
Any help is appreciated.
Thank you.
I bought the BW auto monitor from Amazon.
My board looks like the "Variant 10" in the wiki, but the voltage regulator is different (the one in the wiki is JWBV795D).
I checked the 6-pinned chip labelled "JWBV604D" on my board looking for the voltage regulator.
I searched online for the datasheets without success. I supplied the board with 19V and in the image I added the voltages that I measured on each pin.
In the wiki, the 5V was soldered to pin 6, but my pin 6 has an output of 3.3V.
Will the conversion work?
Any help is appreciated.
Thank you.
Re: Help converting BW screen to 5V
Hello, I believe its the same board I had on one of my builds, here is a pic to show where I connected the VCC, Hope this helps, let me know, good luck.
- Attachments
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- GBZ BW Screen.jpg (751.87 KiB) Viewed 5527 times
Gus
Re: Help converting BW screen to 5V
Hi Thump52, thankyou for your message.
You soldered the 5V VCC wire to pin 7 on the MK25D40BTIG1739 chip?
Thank you for your help.
You soldered the 5V VCC wire to pin 7 on the MK25D40BTIG1739 chip?
Thank you for your help.
Last edited by trisfoz on Tue Mar 06, 2018 2:40 pm, edited 1 time in total.
Re: Help converting BW screen to 5V
Hi Thump52, thankyou for your message.
You soldered the 5V VCC wire to pin 7 on the MK25D40BTIG1739 chip?
Thank you for your help.
Re: Help converting BW screen to 5V
I don't have a good pic of the chip number, but it looks very similar to the one you have, I would test it with a multi meter to make sure, but it does look like the one I had, good luck.
Gus
Re: Help converting BW screen to 5V
This the wiring for that board to run from 3.3V . It has been tested and you dont have to mess around with IC soldering/desoldering. Just connect the Edited wires yellow, black, and red.
Sent from 20,000 leagues under the sea
My Cardboard GBZ build : http://www.sudomod.com/forum/viewtopic.php?f=9&t=2851
EmulationStation optimization for Pi Zero : http://www.sudomod.com/forum/viewtopic.php?f=8&t=2922
My Cardboard GBZ build : http://www.sudomod.com/forum/viewtopic.php?f=9&t=2851
EmulationStation optimization for Pi Zero : http://www.sudomod.com/forum/viewtopic.php?f=8&t=2922
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Re: Help converting BW screen to 5V
According to this site the chip in the picture (MK25D40BTIG1739) is a data storage chip and not the voltage regulator!
https://www.yoycart.com/Product/562466580239/
Are there any other chips on the board?
Maybe on the other side?
I think the 3.3v solution provided by hex would be beter to try out first, the video chip runs on 3.3v so beter be safe...
https://www.yoycart.com/Product/562466580239/
Are there any other chips on the board?
Maybe on the other side?
I think the 3.3v solution provided by hex would be beter to try out first, the video chip runs on 3.3v so beter be safe...
Re: Help converting BW screen to 5V
Hi Hex, Thank you for your reply and your solution.
I used the 3.3V on the raspberry pi and wired it as in your pic to power the screen and it works great.
I can now finish my build.
Thank you and Wailer for your help.
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Re: Help converting BW screen to 5V
Hey mate
thanks for the images
so did you wire anything to the power pads in the bottom left of the raspberry pi like in the image ?
or did you just go red, black to the gpio pins and and yellow to tv ?
Re: Help converting BW screen to 5V
Hi,stevetingate wrote: ↑Fri Mar 09, 2018 4:21 pmHey mate
thanks for the images
so did you wire anything to the power pads in the bottom left of the raspberry pi like in the image ?
or did you just go red, black to the gpio pins and and yellow to tv ?
No I did not wire anything to the 5V power pads. I just wired the red and black to the gpio pins (3.3V and GND) and and yellow to the tv composit pad.
Good luck.
Thanks.
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