have somebody starting chart for AM4 boards?
have many boards with am4 so maybe i can repair some
have many boards with am4 so maybe i can repair some
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Re: have somebody starting chart for AM4 boards?
Hope these helps -
Re: have somebody starting chart for AM4 boards?
thanks, its great. have u any schematic?Last edited by ktmmotocross; 01-18-2023, 05:22 PM.Comment
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Re: have somebody starting chart for AM4 boards?
SchematicsComment
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Re: have somebody starting chart for AM4 boards?
many thanks mate
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I have three identical-spec 820-01700 boards (2.6/32/512), and ALL THREE boards came to us with the same fault, from different sources: The boards don't wake from hibernation with the keyboard or lid, they ONLY wake when you press the power button. I understand this is a very minor issue, but the boards must be fixed!
We will of course begin with the obvious (checking lid signals), but I couldn't help but notice these three boards were all 32GB variants. Has anyone noticed an issue relating to these 32GB boards in particular? I of course don't think it's a RAM issue, but it's bizarre... -
We've now created a stack of 10 boards that have the same issue, which we suspect to be CPU-related. The issue is very simple--the board will not boot to anything, only showing the exclamatory sign inside a circle. No amount of DFU/restore, wipe/erase, etc, will resolve the issue. No boards have physical damage. We went ahead and replaced the SSD nands on two boards (one 02020, one 02016) and the issue remained exactly the same. We are considering replacing the CPU on one of the boards using a locked CPU, just so we can see if it resolves the issue.
Has anyone else run into this... -
I'm looking to upgrade several 8GB 820-00850 boards to 16GB or 32GB for personal use. I am curious what the best practice and process is for sourcing new replacement chips, and what vendor(s) you guys prefer? Another question is, how do I find compatible chips and their corresponding part/model numbers? For example, in the 820-00850 schematic, the DDR chip U2600 model listed (EDFB232A1MA) corresponds to 1x32GB chip. Of course, I would need 4x8GB chips to replace the 4x2GB chips currently on the board. How do I find compatible 8GB chips? Is it as simple as searching "BGA178 8GB 2133"...
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Hello,
i want to repair an Onkyo TX-NR809 receiver.
symptoms:
on power on, display appears and i hear one click. enue functions is given.
- no hdmi output
- audio output not tested, but i think it is not there
- usb sticks are not recognized
if i read out the chips with display+standby button + tone+
both dts show only ????
chip is D830K013BZKB4
things i have done:
- reflow of the dts chip without taking off and reballing
- changed the aluminium caps without the big one with 25v because i dont...08-25-2025, 01:04 AM -
Hi friends, last week I got 3 same boards for repair (NM-D562 Rev. 3.0), same problem, power button light up, but motherboard wont start.
3,3V_alw and 5V_alw, 1,8V_alw and 0,75V_alw presented on all 3 boards, no other voltages. 1,2V missing and if I checked schematic right, I need 1,2V and than can be +3VS and +5VS generated after getting SUSP_N signal from KBC? or vise versa?
I checked for low resistance on coils, no low resistance.
Anyone with same issue like me?
Thanks for any help.
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