Hi!
MSI B660 MORTAR MS-7D42
the problem start when the client broke some capacitors and resistors in Back of the motherboard​ under PCH
i put them back but
same thing
motherboard power on with no display after press the pwr button power on with dram led and restart and power on again with red cpu led
cpu vcor looks good no short and cpu heat up but after second restart not heating
i found 2 shorted transistor near to KBC but i doubt if that normal short or not (connected to AGND AND AMDSIC)
other technicien flash the bios but same thing ....
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by mo000Today, 12:45 PM
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by bohabohaThe HILTI CPC battery flashes green but no tool starts or works. when testing the battery has 19.2v what could be the problem with them because I have three similar ones but there is nothing written on them all the patches are removed in the first B22 /4.0 with 19.2v the second one B22 /5.2 with 21.8v the third B22 /4.0 with18.3v are all three destroyed ? a bit difficult to believe have also tried other Hilti tools the same thing if someone who can help very grateful...Today, 08:05 AM
-
by MinzHi,
I have a bricked ThinkPad P52, has no display nothing. Just happened to be in this situation after a failed bios update. Could anyone please get the rom file? I just ordered the ch341a programmer for the first time so if anyone can help me that would be much appreciated.
Type 20m9-000kus
S/n pf-1ldn07 19/02
Thanks-
Channel: BIOS Requests ONLY!
Today, 05:34 PM -
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by Olles4Hello people. I trying to repair my welding machine oerlikon citomig 180mp hpf and there is a little board with blown stuff.The problem is i cant identify the value of the blown resistor and diode. Any suggestion?4 Photos05-18-2024, 01:22 PM
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by cstoutHello all, I've been looking into this portable air conditioner's remote control and can't find what could be causing the problem - or possibly this remote is just terribly designed.
The remote only works at exactly 3V - if I drop it any lower, using my bench power supply, to say, 2.9V then the remote will not flash the display and turn off. I don't have any AAA batteries that are exactly 1.5V each so I'm not sure if this remote is designed this way - to only use the freshest possible batteries, or if there's a failed component in the mix.
I can't find any schematics...Today, 03:53 PM -
by CrystaleyesHi 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...5 Photos05-29-2024, 08:23 PM -
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Ps will upload Pic shortlyYesterday, 02:54 AM -
by NicktronicOk, so I know I know, it's a Westinghouse....lol It's got the backlights but no video. Likely the panel, but I'd like to take some measurements on the buffer board with help from you experts to confirm. See the attached pictures. In pic #1, there's a nice pin reference to use to take some measurements. The large IC in pic #7 gets up to 60degC when the TV is on.
So, backlights, no video, go! 🙂...Today, 03:21 PM -
by OmronGuys 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 -
by DebyCPU: i5-8365U
1.Scanned motherboard in 1200DPI
2.Schematic in PDF
3.Boardview in PDF
4.Boardview in CAD (open with BoardViewer 2.1.0.8)
[URL=filedata/fetch?id=3283458&d=1717448850][ATTACH=JSON]{"alt":"Click image for larger version Name:\t2024-06-03-21h-44m.jpg Views:\t0 Size:\t1.94 MB ID:\t3283458","data-align":"none","data-attachmentid":"3283458","data-size":"small"}[/ATTACH][/URL] [URL=filedata/fetch?id=3283459&d=1717448858][ATTACH=JSON]{"alt":"Click...-
Channel: Schematic Requests ONLY!
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by cstoutHello all, I've been looking into this portable air conditioner's remote control and can't find what could be causing the problem - or possibly this remote is just terribly designed.
The remote only works at exactly 3V - if I drop it any lower, using my bench power supply, to say, 2.9V then the remote will not flash the display and turn off. I don't have any AAA batteries that are exactly 1.5V each so I'm not sure if this remote is designed this way - to only use the freshest possible batteries, or if there's a failed component in the mix.
I can't find any schematics...Today, 03:53 PM -
by MinzHi,
I have a bricked ThinkPad P52, has no display nothing. Just happened to be in this situation after a failed bios update. Could anyone please get the rom file? I just ordered the ch341a programmer for the first time so if anyone can help me that would be much appreciated.
Type 20m9-000kus
S/n pf-1ldn07 19/02
Thanks-
Channel: BIOS Requests ONLY!
Today, 05:34 PM -
-
by x_orange90_xI 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 -
by ChattFixHey 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
-
by bohabohaThe HILTI CPC battery flashes green but no tool starts or works. when testing the battery has 19.2v what could be the problem with them because I have three similar ones but there is nothing written on them all the patches are removed in the first B22 /4.0 with 19.2v the second one B22 /5.2 with 21.8v the third B22 /4.0 with18.3v are all three destroyed ? a bit difficult to believe have also tried other Hilti tools the same thing if someone who can help very grateful...Today, 08:05 AM
-
by OmronGuys 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 -
by mo000Hi!
MSI B660 MORTAR MS-7D42
the problem start when the client broke some capacitors and resistors in Back of the motherboard​ under PCH
i put them back but
same thing
motherboard power on with no display after press the pwr button power on with dram led and restart and power on again with red cpu led
cpu vcor looks good no short and cpu heat up but after second restart not heating
i found 2 shorted transistor near to KBC but i doubt if that normal short or not (connected to AGND AND AMDSIC)
other technicien flash the bios but same thing ....Today, 12:45 PM -
by fichambaHello everybody:
I'm fixing a Lenovo Legion 5P 15IMH (can't see more on cover, but I will put a pic of the MoBo's reference), and I have a problem. I have solved all the problems with several components which went bad (MosFets, +3.3/+5Vdc regulator, shorted EC), and everything is not shorted now, but the PCH is. So I need your help to order this chip. I don't know what is the designation in order to buy one (the one in the MoBo was removed because it has a shorted zone). Everything is clean waiting for a new PCH, but I have no clues in how to order one. Please I beg your help....5 PhotosToday, 09:44 AM -
by NicktronicOk, so I know I know, it's a Westinghouse....lol It's got the backlights but no video. Likely the panel, but I'd like to take some measurements on the buffer board with help from you experts to confirm. See the attached pictures. In pic #1, there's a nice pin reference to use to take some measurements. The large IC in pic #7 gets up to 60degC when the TV is on.
So, backlights, no video, go! 🙂...Today, 03:21 PM