Re: iPhone 11Pro Max - Not Open
Finally I changed only the LCD screen and worked flawless.
Spongebob89
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Re: iPhone 11Pro Max - Not Open
Thanks for your reply. With only connected the connectors 1 & 2 the current that draw the iphone is about 500mA (if I disconnect the connector 1 the current falls to zero). This current is normal with olny these connectors connected? Also, there is a way to fix the Charging Flex (if it is indeed the problem there)?...Leave a comment:
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Seagate HDD Damage From Wrong Voltage
Hello,
I have a Seagate ST3500312CS where is dead because overvoltage of the power supply. When I unscrew the PCB I saw that three capacitors (or maybe ferrite beads) where blown out. Do you have any idea if I have a possibillity to fix it. The problem is that I have an industrial custom PC where recognizes only the disk with the [b]certain only firmware[/b] (it is crazy but it is true). Does anyone knows where the firmware of the disk is saved (I have another segate disk but with different firmware and I thought If I could replace the firmware chip in the good one). Anyway I would like... -
Re: GE voluson 730 expert PhoenixBios D686 - Bios File Needed
Any idea where can I find it?...Leave a comment:
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Re: GE voluson 730 expert PhoenixBios D686 - Bios File Needed
Hello, could you explain me what do you mean with the "BIOS could have been customized"? This is not the original bios and maybe will not work? Thanks a lot for your reply.
I am sorry but I upoloaded wrong picture... My motherboard is this model "TEAN TN2 94V0". There is any bios for this version of the motherboard?...Last edited by Spongebob89; 08-01-2023, 11:28 PM.Leave a comment:
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GE voluson 730 expert PhoenixBios D686 - Bios File Needed
Hello,
does anyone bios program for the chip "PhoenixBios D686 - Phoenix 1998"? The motherboard there is from an ultrasound machine "GE voluson 730 expert"....Last edited by SMDFlea; 08-01-2023, 11:43 AM. Reason: Added "GE voluson 730 expert" to thread title,moved to bios requests section !!! -
GE voluson 730 expert Motherboard no Image
Hello,
I have the below problem. I open the PC and it starts (CPU fan is working) but I have no image at all (not from the external VGA and neither from the on board VGA). Near to the bios chip there was some blown capacitors so I supose that something was happend with the voltage of the bios chip and the bios program corrupted or am I totally wrong? I replaced the "1" CPU with the "2" CPU and no image again. Also, I measured the CPU supply cable and it has 11,8Volt, but the strange thing is that both CPUs "1" & "2" are absolutely cold and the... -
Re: LCD Backlights Driver - Unknown Component
Thanks all of you for your replies. This type of fuse consider slow, or Medium, or Fast blow?
Fusing characteristics: Within 1s
[url]https://gr.mouser.com/c/circuit-protection/fuses/surface-mount-fuses/?current%20rating=1.5%20A&fuse%20size%20%2F%20group=1206%20%283216%20metric%29[/url]
I found this below. The broken was 1.5A/75V/1sec@250%of Ampere Rating and the replacement I found is 1.5A/125V/5sec@200%of Ampere Rating. Do you beleive the difference in the time will not...Last edited by Spongebob89; 07-22-2023, 06:32 AM.Leave a comment:
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LCD Backlights Driver - Unknown Component
Hi,
I have an "LCD Backlights Driver" and it is not working. After measurments and checking the routes of the PCB I beleive that this component on the red circle is a choke for filtering the supply voltage and block noise from the inverter to go back to the main board. When I measured in ohm and in diode mode with multemeter shows always OL. I shortcircuit this component and it worked. The current that I measured with multemeter is 550mA, so I want rated current 1,5x550mA=825mA~1Α. Am I right that this is a choke and if yes what value do you beleive is (maybe 15uH or the... -
iPhone 11Pro Max - Not Open
Hello,
I have an iPhone 11Pro Max where took a sea water on it in a protective bag that I had it. When I connect it on the PC the PC doesn't recognise it at all. I opened and I saw white corrosion on the down side of the screen (at the side of the charging port). I took some measurements on the battery connector with the screen connected and without the screen connected (at the attached photos). Could you tell me if the measurements that I took are OK without the screen attached on the main board. One measurement it has to be 0,002V and it was 0V.. is that OK? Also, if the main board is... -
Re: Acer A114-31-C6QA - DA0Z8PMB8E0 REV-E
Unfortunately not... I didn't find yet a solution. Any further help is welcome....Leave a comment:
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Acer A114-31-C6QA - DA0Z8PMB8E0 REV-E
Hello,
I have the Acer A114-31-C6QA, and motherboard model is the "DA0Z8PMB8E0 REV-E". The laptop doesn't turn ON (only power ON light is present). The 5V and 3.3V are present. I beleive that the problem. First I tried to re-program the bios chip "MX25U8033EM[COLOR="red"][B]2[/B][/COLOR]I". I use the programmer CH341A and the RT809F but both couldn't programmed (give an error). I bought a new chip "MX25U8033EM[B][COLOR="Red"]1[/COLOR][/B]I" with 1I instead of 2I (I read on the datasheet that the only different is the size of the chip). Now...Last edited by SMDFlea; 08-14-2022, 03:13 PM. -
Re: HP DA0R53MB6E0 S5_ON not present
These are old photos... I rework all the solder....Leave a comment:
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Re: HP DA0R53MB6E0 S5_ON not present
I measured these transistors after I removed them. It looks all fine. Also I tried to start the motherboard without resolder them back and as you can see on the below video it makes the same thing again (standby draws about 40mA and after I enable the motherboard for 3 sec draws 100mA and then back to 40mA).
PQ27
Source (1-2-3) & Drain (5-6-7-8) ->Resistance: 1.86Mohm
Source (1-2-3) & Gate (4) ->Resistance: O.L.
Gate (4) & Drain (5-6-7-8) ->Resistance:...Leave a comment:
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Re: HP DA0R53MB6E0 S5_ON not present
Hi, I after measurements of measurements I found that the value of the resistor “PR110” was 114ohm instead of 10ohm and I replaced it. After that I measured again the voltage across all the pins of “TPS51123A” (my measurements are at the attached image). About the mosfets I am not sure that are shorted because I inject voltage at the output capacitor of 5V & 3,3V and the current consumption was 110mA. I found the below mosfets on ebay.. except from the “ME7835” (this one that is on me motherboard are different...Last edited by Spongebob89; 07-10-2022, 11:45 AM.Leave a comment:
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Re: HP DA0R53MB6E0 S5_ON not present
I measured the mosfets on the PCB (without desolder them)
Multimeter Fluke 28 II (Autoscale)
[B]PQ46[/B]
Source (1-2-3) & Drain (5-6-7-8) ->Resistance: 336Kohm (Diode: 0,534V)
Source (1-2-3) & gate (4) ->Resistance: 1,29Mohm (Diode: O.L.)
gate (4) & Drain (5-6-7-8) ->Resistance: O.L. (Diode: O.L.)
[B]PQ48[/B]
Source & Drain ->Resistance: 1,69Mohm (Diode: 0,464V)
Source & gate ->Resistance: 1,696Mohm (Diode: O.L.)
gate & Drain...Leave a comment:
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Re: HP DA0R53MB6E0 S5_ON not present
I did it but not working again... This motherboard is going to crazy me....Leave a comment:
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Re: HP DA0R53MB6E0 S5_ON not present
I hope this will help....Leave a comment:
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Re: HP DA0R53MB6E0 S5_ON not present
At the attachements I have the full design of TPS51123....Leave a comment:
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Re: HP DA0R53MB6E0 S5_ON not present
Hello,
I measured the below. Also, I re-flash the bios but nothing new happend... the same thing. Also, if I install a wrong version of bios the white light at the power connector don't shine. What else I have to look (this failure is mind blown). Thanks for your reply.
AD_ID = 0,774V
AD_TYPE = 0,766V...Last edited by SMDFlea; 08-14-2022, 03:11 PM.Leave a comment:
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