This is the schematic I found, but unfortunately it doesn't match serigrafy.
[url]https://www.badcaps.net/filedata/fetch?id=2052989[/url]https://This is the schematic I foun...52989[/url]
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Hi Mon2 and thanks for replying. I downloaded the schematic but I don't remember where. I'll send you a photo of the oxidized component IC charger replaced (picked from other same main board)
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3161154}[/ATTACH]...Last edited by SMDFlea; 12-11-2023, 04:58 PM.
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Toshiba L50-B-1Q0 (Main DABLIDMB8E0 REV:E) no power on
Good morning forum. This laptop comes into my laboratory with the defect that it won't turn on. By connecting the bench power supply I have an absorption of 1.56A (battery charging), I disconnect the battery, I have an absorption of 0.01A. I give the power on but it doesn't react. I check the mainboard and I notice the Isl88732 charger with oxide and a little burnt between pins 7-8. I remove the charger, clean the pads and solder another ISL coming from another identical board. I also find a bit of oxide in the power button connector. I clean the connector, clean the flat that goes to the power...
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Re: Asus K3500P Main (X7400PC R2.2) Bios Dump Reques
Thank's SMDFlea, serial number writed in bottom cover: MAN0CX229059426
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Asus K3500P Main (X7400PC R2.2) Bios Dump Reques
Good morning forum, I'm trying different bios to try to resurrect this machine, with all the bios tried the machine turns on, the fans turn but the screen is black. I tried to download the correct bios from the Asus website (x3500PC by reading the QRCODE from the motherboard) but this is a PFAT AMI, I managed to decrypt it but I get several files and rebuilding it is very laborious, I tried with the uefi tool to extract only the main bios and cut the decrypted one and rebuild it in hex but it doesn't work the same. Wondering if anyone has a dump for this main board. I thank you.
Attach...
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Asus K3500P Main (X7400PC R2.2) Bios Dump Reques
Good morning forum, I'm trying different bios to try to resurrect this machine, with all the bios tried the machine turns on, the fans turn but the screen is black. I tried to download the correct bios from the Asus website (x3500PC by reading the QRCODE from the motherboard) but this is a PFAT AMI, I managed to decrypt it but I get several files and rebuilding it is very laborious, I tried with the uefi tool to extract only the main bios and cut the decrypted one and rebuild it in hex but it doesn't work the same. Wondering if anyone...
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Re: hp dv3 dis to uma?
In my case laptop the conversion in Uma worked by removing R166 and inductor L6. My mainboard is 6050A2371701-MB-A01with i3 350M CPULast edited by robgerr; 11-03-2020, 12:32 PM.
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Re: projector Cheerlux CL720 with damaged psu
I thank you for the answer, but do I have to connect the 12v in the primary side of the transformer or in the secondary?
I noticed that in the primary and secondary side of the transformer there are more outputs, in any case this power supply works with two voltages, 12v and 35v in output
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Re: projector Cheerlux CL720 with damaged psu
[attach]194993[/attach]
[attach]194994[/attach]Re: projector Cheerlux CL720 with damaged psu
[attach]194993[/attach]
[attach]194994[/attach]...
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projector Cheerlux CL720 with damaged psu
Hello to all friends of the forum. This projector will not turn on after a power surge. Disassembling it, I found the psu with burnt components, I found a large carbonized resistor, burnt smd resistors, short power mosfet, and two small smd smeared transistors, The ic switch is a ld7575ps. Do you think it is possible to go back from another scheme to the components that can be replaced since the names are not legible?...
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Re: Acer E5-571G Black Screen (a5wah la-b991p)
pu801:
pin 1 1,04v
pin 2 1,04v
pin 3 0v
pin 4 1,04v
pin 5 1,67v
pin 6 2,00v
pin 7 1,74v
pin 8 0v
pin 9 1,80v
pin 10 1,80v
pin 11 0v
pin 12 5,04v
pin 13 7,57v
pin14 8,14v
pin 15 8,21v
pin 16 4,40v
pin17 0v
pin18 1,04v
pin 19 1,04v
pin 20 1,04
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Re: Acer E5-571G Black Screen (a5wah la-b991p)
I upload the schematic, [url]https://anonfile.com/k7cfjbkebe/compal-a5wahea50hblab991pr10_pdf[/url]Re: Acer E5-571G Black Screen (a5wah...pr10_pdf[/url]
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Acer E5-571G Black Screen (a5wah la-b991p)
Good evening friends of the forum. This laptop has the following problem: it turns on but I get a black screen. Think of a dedicated gpu problem (n15-v-gw-s-a2) Replaced video card but the defect remains. I tried Changing ram, reprogram bios, but nothing. I noticed that the coil pl1203, pl1204 and pl 802 are heating a lot. On pl1203, pl1204 I find the voltage of 1.01V and on pl802 I find 1.80v on one side and on the other I get 0.40v. I suspect this is the integrated graphics in the chipset but I wanted your opinion
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Seller for bga
Good morning to all the friends of the forum. For several years I have always taken bga videos or chipsets from see-ic. The problem is the long time, a safe month to get the bga. I found a retailer on ebay called chipbay.uk. Has anyone had any experiences with him? Are the bga good or is it better to stay with see-ic?
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Re: Samsung RV520 (main BA4-01608A Scala2_R) no video and no cpu_core
I think the problem has been solved. I left the laptop turned on for 20 minutes, after which the fan stopped and the iiamgine appeared in the external screen, obviously the CPU core was present. I turned off and on again and no image again. I heat the nec tokin and it's the laptop power up perfectly. Supposed nec tokin with 4 cap tantalio 330uf and it seems to work perfectly. I keep you on trial and let you know
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