I have 24 volt adapter when i measure its output with multimeter i found the 24 volt is good put it dosent charging the battarey of Electric wheelchair i tried another adapter and charging thr battarey what can be the problem
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-
Today, 12:32 AM
-
Acer One 10 / N15P2 / S1002, MB=T10IBT1_MB_V30_0508C
found in the trashbin
initial state: Windows 10 loading until begin photo + time display, touchscreen/keyboard/trackpad no response, restart in recovery by F2 key showed a working kb and touchscreen
second state: after a card wash in warm water, drying with heat gun but forgot to remove bottom plastic foil glued on it, fed power, no sign of life apart power led and charge led lit still, after found slight moisture under that foil (grrrr, sgrunt), no more power 1,8v on the bios flash, rarely found 1,8v on the cap...06-01-2024, 01:59 PM -
Hello.
I need help with a laptop Dell with LA-D801P motherboard.
The laptop completely died, no power, no leds.
The voltage of 19V is present at the output of the second mosfet.
The voltage on Pin 9 and 19 of PU102 is 0V.
Voltage on
PU100 :
pin2 =19v
pin11 =4.16v
pin12 =0.18v
pin17 =0v
pin19 =0v
I have 0 ohms on the coils PL100, PL301 and PL700.
If I remove pjp102 the short remains on the side of +3VALW.
Then I removed pjp501 and pjp801 but the short did not go to the integrated PU500 and PU800.
Then I checked...Yesterday, 02:54 AM -
-
Hello, this laptop [B]Hp Laptop 15-da0103ng with no display only after reset: remove battery and wait , then it displays...
I changed the bios and reprogram it with no success
any help please[/B]
Hello, this laptop [B]Hp Laptop 15-da0103ng with no display only after reset: remove battery and wait , then it displays...
I changed the bios and reprogram it with no success
any help please[/B]
Hello, this laptop [B]Hp Laptop 15-da0103ng with no display only after reset: remove battery and wait , then it displays...
I changed the bios and reprogramYesterday, 04:26 AM -
daxktdmb8c0
Maybe someone has a photo of a section of the board, otherwise there are no diagrams or boardview...Yesterday, 12:31 PM -
Hi Peeps.
Quick question. Might sound silly so bear with me pls.
After flashing a BIOS with a flashing tool, my laptop went from stone dead, to the fan spinning. However the screen doesnt show POST. Is there anything like pulling out the battery AFTER flashing the BIOS one needs to do or is there another issue I am sitting with now?Yesterday, 01:00 PM -
Hi again guys. I have this motherboard that won't show display even tho it was doing it yesterday. I think something could've past away in the circuit.
I'd appreciate if anyone who is used to MOBO LCD voltages and circuits could enlighten me since this is the first time I have to deal with it.
I'm missing [B]+3VLCD.[/B]
This is the circuit
[URL=filedata/fetch?filedataid=339573][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3284862}[/ATTACH][/URL] [URL=filedata/fetch?filedataid=339576][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3284863}[/ATTACH][/URL]...Yesterday, 09:29 PM -
Hi, this is for troubleshooting and, hopefully, repairing a Delta Power psu
that is still quite new, as it worked OK for some months until it failed.
At the time I was not into power supply electronics; it was put
aside and a new power supply installed inside the computer. Also at the time
power supplies were half the price of today's.
On the PCB there are a D339 and 7500B chips.
I have found that schematics with these 2 chips (see included file).
Does it represent the actual circuit of the MAX-500ATX, I cannot tell.
Some measurements,...Yesterday, 03:34 PM -
I have a nacon controller which has some fancy RGB ring (4 RGB LEDs). 3 of 4 leds are not good and I am looking for a replacement. The size I measured is 3mm x 2.5mm and it seems a 3528 led would fit fine, and it's in common anode. But I am not sure what wattage it is. I have attached photos of led and driver ic (ak63rq1 I think).
Also one of the triggers is malfunctioning sometimes, I don't know what these pots are called. I measured across the 1st and last legs (in circuit) seems to be 1.1kohm pot. I found some xbox controllers have this but they are 10k. Any info?...Yesterday, 08:28 PM
-
Hi again guys. I have this motherboard that won't show display even tho it was doing it yesterday. I think something could've past away in the circuit.
I'd appreciate if anyone who is used to MOBO LCD voltages and circuits could enlighten me since this is the first time I have to deal with it.
I'm missing [B]+3VLCD.[/B]
This is the circuit
[URL=filedata/fetch?filedataid=339573][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3284862}[/ATTACH][/URL] [URL=filedata/fetch?filedataid=339576][ATTACH=JSON]{"data-align":"none","data-size":"thumb","data-attachmentid":3284863}[/ATTACH][/URL]...Yesterday, 09:29 PM -
I have 24 volt adapter when i measure its output with multimeter i found the 24 volt is good put it dosent charging the battarey of Electric wheelchair i tried another adapter and charging thr battarey what can be the problem
Today, 12:32 AM -
[B]Chromebook e100 2nd Gen - Bios enable Developer Mode and remove Managed by...[/B]
I Have Chromebook e100 2nd Gen,
Please can you enable Developer mode and remove managed by ... please
mlb_serial_number: [B]1532022002872[/B]
serial_number: [B]PF2TKV5V[/B]
model_name: [B]Lenovo 100e Chromebook 2nd Gen[/B]
mfg_date: [B]2021-04-19[/B][B]Chromebook e100 2nd Gen - Bios enable Developer Mode and remove Managed by...[/B]
I Have Chromebook e100 2nd Gen,
Please can you enable Developer mode and remove managed by ... please
mlb_serial_number:...Yesterday, 12:57 PM -
I have a 5W lamp on 12Volts battery, I want it to be half as bright, so I will add a resistor. What resistor should I supply?
A = W = 5 = 0.416mA
_ _
V 12
R = V = 12 = 28.84 Ohms (R) this is resistance of lamp
_ _____
I 0.416
So I will add one resistor 28.84 Ohms
I will have 28.84 + 28.84 = 57.6 Ohms
Or 28.84 + 28.84 = 14.42 Ohms
I don't know if it will work in series or in parallel
voltage would be 6V and amp current mA = 0.208mA We divide everything by two
W= V * I...06-04-2024, 01:58 AM -
Hi Peeps.
Quick question. Might sound silly so bear with me pls.
After flashing a BIOS with a flashing tool, my laptop went from stone dead, to the fan spinning. However the screen doesnt show POST. Is there anything like pulling out the battery AFTER flashing the BIOS one needs to do or is there another issue I am sitting with now?Yesterday, 01:00 PM -
Hi... Does anyone have a schematic LENOVO AIO 510-22ISH FOCB (Mobo number CCA11 LA-D952P) ???...
[URL=filedata/fetch?filedataid=339524][ATTACH=JSON]{"data-align":"none","data-size":"small","data-tempid":"temp_339524_1717623230892_578"}[/ATTACH][/URL] [URL=filedata/fetch?id=3284546&d=1717597851][ATTACH=JSON]{"alt":"Click image for larger version Name:\tF!_GUE_4S0D01.png Views:\t0 Size:\t224.5 KB ID:\t3284546","data-align":"none","data-attachmentid":"3284546","data-size":"small"}[/ATTACH][/URL]...Yesterday, 08:38 AM -
I need asus zenbook bios motherboard is UX562UG
R2.1
here is my old bios....06-04-2024, 12:48 AM -
820-01700 No Power, PP3V3_S5 missing.
I think the board doesn't turn on.
I have power on directly on the board in SWK001
External power supply with digital volt/amp and shows 20V and 0.350A.
LDO Voltages Ok06-04-2024, 04:57 PM -
-
I have a nacon controller which has some fancy RGB ring (4 RGB LEDs). 3 of 4 leds are not good and I am looking for a replacement. The size I measured is 3mm x 2.5mm and it seems a 3528 led would fit fine, and it's in common anode. But I am not sure what wattage it is. I have attached photos of led and driver ic (ak63rq1 I think).
Also one of the triggers is malfunctioning sometimes, I don't know what these pots are called. I measured across the 1st and last legs (in circuit) seems to be 1.1kohm pot. I found some xbox controllers have this but they are 10k. Any info?...Yesterday, 08:28 PM