Hello,
I have a A1706 with 820-00923-A board. The laptop came in with non-working keyboard. I bought a new top-cover with keyboard and transfered everything to the new topcover.
Since then the macbook will not charge or power-up. Before replacing top cover, I started the macbook to test, and it worked fine apart from keyboard. Then shut it down and did replacement.
This is what I measure so far:
Resistance from F7000 to ground is 123 Ohm on pin 1 and 2
PPBUS_G3H = 0,79v
PPBUS_HS_CPU = 0,79v
PPBUS_HS_OTH5V = 0,79v
PPBUS_HS_OTH3V3...
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05-21-2024, 02:06 PM
-
anyone can clean the me region of this bios?? i need clenan it because i change the processor.
huawei mach-w29
id2018ap0990
board id sp1machw19mverb rf hf
thx in advanceToday, 05:44 AM -
Hi all.
Recently I picked up a vintage HP 37717B communications analyzer which uses one of these MML200 Coutant power supplies. Needless to say the PSU is not working, and surprisingly there is apparently nothing available on the web regarding repairing one of these. No stories, no schematics, zilch!
There[I] are [/I]however many companies offering repair 'services', however I don't have the luxury of sending it off, so am intending to do the repair myself.
I admit right now that I am no expert on smps repair, although I do have a grasp on the principle of the general...05-29-2024, 08:23 PM -
Metrix OX-8627
100Mhz dual-trace digital storage CRT scope.
all controls are digital and it has full remote via IEE488 bus
very fucking rare and hard to find any info on
some pics after a recap using about 90 new caps!!
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3282614}[/ATTACH] [ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3282618}[/ATTACH] [ATTACH=JSON]{"data-align":"...Yesterday, 08:47 AM -
Hello, is it possible to unlock the BIOS and see whether there is an option to automatically turn on when power detected?...Today, 02:42 AM
-
HI
i need boardview for msi b660 ms-7d42 because some components are missing behind pch (resistors and capacitors ) the motherboard just stop on yellow dram light...06-01-2024, 01:04 PM -
Is there a way to find out who owns the original email on a macbook air M1 locked with icloud?Yesterday, 09:18 AM
-
Guys I have set top box which has no power on in specific case. When I insert antenna plug which has 12V on it because of dB gain device on top of antenna, device if its turned off, it will not turn on.
After I need to open the case and short + and - on ABS10 chip and after that device will turn on, without antenna plugged in, after its turned on I can plug in antenna and it will work fine, but I notice there is some extra heat inside the unit.
Is this chip okay? Rectifier bridge ABS10 JQC I don't think there should be connection like additional diode between plus and minus...Yesterday, 03:09 AM -
Hi all,
Model: HP Pavilion 14-ce3010nh 8BV97EA
Board number: DAG7ALMB8C0 - G7AL REV C
Issue: I have an HP Pavilion 14-ce3010nh 8BV97EA laptop. When plugged into the charger, it turns on, but there is no display, the fans do not run, and the processor gets slightly warm. Unfortunately, I haven't been able to figure out what the problem is. I've reflashed the BIOS twice without any success. No post. Already tried out with another ram stick with no luck
I measured the voltage with the HP turned on in red, and I measured their resistance with the HP turned off in green....05-30-2024, 04:10 AM -
Please help! Need bios:
Asus G532LWS-AZ137T (Motherboard: g532lws rev.1.3)
CPU I7 10875H
GPU RTX2070
QR Code on board: XM08MC02S7,L835NRKD0006YSMB,G532LWS,60NR02T0-MB8100,130,3C7C3F5C2361Today, 02:32 AM
-
Please help! Need bios:
Asus G532LWS-AZ137T (Motherboard: g532lws rev.1.3)
CPU I7 10875H
GPU RTX2070
QR Code on board: XM08MC02S7,L835NRKD0006YSMB,G532LWS,60NR02T0-MB8100,130,3C7C3F5C2361Today, 02:32 AM -
Hello, is it possible to unlock the BIOS and see whether there is an option to automatically turn on when power detected?...Today, 02:42 AM
-
I get backlights that stay on not there is no image. The tv does not automatically power on when plugged in either which I generally see happen when there is a fault. It responds as it should to the power button.
I checked the test points on the TCON and I have proper voltages except for at 1P15V. I don't know if that is supposed to be 15V or 5V, but either way I only get 1.134V on that point. I have 12V, 8V, VCC, and a small amount on the CKV point.
I tried heating up the SoC on the main board but that made no difference. Disconnecting either ribbon from the TCON also...06-01-2024, 08:55 PM -
anyone can clean the me region of this bios?? i need clenan it because i change the processor.
huawei mach-w29
id2018ap0990
board id sp1machw19mverb rf hf
thx in advanceToday, 05:44 AM -
Hey everyone, I have an LG 65uq7050zud with a black picture but backlight is on. I tested the measurements from the PSU and they check out. I can’t find any service manual so I’m suspecting the main board. Any advice before I replace the board? Found them for around $60...Yesterday, 12:10 PM
-
-
I have a Samsung UN55TU700DFXZA with a distorted picture and I thought it was a bad panel. I had a similar board with one number off and still tried it to see what the issue could be. The picture came out clear with only missing blue hue I think. I found a replacement board for $30 but wanted to learn if this would be the main IC or possibly something else. I don't have service manual so looking to learn about these cheap sets....Yesterday, 03:50 PM
-
Guys I have set top box which has no power on in specific case. When I insert antenna plug which has 12V on it because of dB gain device on top of antenna, device if its turned off, it will not turn on.
After I need to open the case and short + and - on ABS10 chip and after that device will turn on, without antenna plugged in, after its turned on I can plug in antenna and it will work fine, but I notice there is some extra heat inside the unit.
Is this chip okay? Rectifier bridge ABS10 JQC I don't think there should be connection like additional diode between plus and minus...Yesterday, 03:09 AM -
I desoldered samwha NF capacitor(50v 5.6uf) from PCB circuit of 29inch CRT TV which have symptoms of no display after I heard sound of inrush of current to TV whenever I switch on this television.
I measured ESR value of this non-polarized capacitor(samwha NF capacitor 50v 5.6uf) by means of MESR-100 ESR meter and It displayed 0.3 ohm
And When I measured its capacitance with digital multimeter and LCR-T4 Mega328 meter, It displayed 10uf from DMM and 8uf from LCR-T4 meter.
I found catalogue of samwha capacitor(samwha-catalogue_3.pdf file), which is attached to this thread,...Yesterday, 07:31 PM -
No display problem .
Acer aspire z3-705
Bristol23-HSW U MB
14127-1
348.03603.0011
i3-5005uYesterday, 09:52 AM