Re: Asus N550LF LAN components burned
Thank you very much for your message,
The one which I bought is 32 pin package, 8 pins per side.
I ordered from that guy, here is a link: [url]https://m.pl.aliexpress.com/item/4000200091763.html?spm=a2g0n.order_detail.order_detail_item.3.5d4c43ceW6Yf8p&gatewayAdapt=glo2pol[/url]
The original one was the same, see attached.
I checked aliexpress store rating and it's really low, only 88% of positive reviews and rating of 3,6.Re: Asus N550LF LAN components burned
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tofik
Member
Last Activity: 10-04-2023, 06:55 AM
Joined: 12-20-2022
Location: Redditch
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Re: Asus N550LF LAN components burned
I did use a flux, it should not be a problem, I visually checked every single pad under scope, I am more worried I bought a fake 8112G chip, ordered it from Aliexpres.
That would be helpful please...Leave a comment:
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Re: Asus N550LF LAN components burned
Thanks for your response,
You are correct, board had a lighting surge.
Saying Ethernet controller is still dead, I meant Ethernet controller is completely not visible in Windows device manager.
75 ohm resistors are 100% fine, cheched them twice.
That long inductor is a 1000pF / 2 kV capacitor (Bob Smith termination), also has been replaced.
"Best to review a realtek example schematic for this part to understand the parts required to rebuild it." That's the best advice, I will...Leave a comment:
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Re: Asus N550LF LAN components burned
UPDATE:
- replaced main IC of the Ethernet controller (Realtek 8112G),
- restored all tracks,
- replaced all 75 ohm resistors,
- replaced 1000pF / 2 kV capacitor,
Did not touch these 3 tiny caps, I am not sure if these are really important.
Anyway Ethernet controller is still dead, I mean in Windows device manager it shows as not connected (drivers are fine).
Any suggestions what I could check now?
Thanks...Leave a comment:
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Asus N550LF LAN components burned
Hi guys,
Could you help me identify burned components on asus N550LF mainboard please?
I am sure that main LAN IC is burned, this is the Realtek 8112G.
Please check photo attached with burned components, tracks are easy to repair, resistor is 75 ohm but what could be that big capacitor which seems to be dead and three others probably capacitors (tiny ones).
Any suggestion would be much appreciated... -
Igbt rjp63k2 smd vs tht
Hello guys,
I have a shorted IGBT transistor RJP63K2 TO220F ([B]THT[/B]).
Could I replace it with a RJP63K2 TO-263 ([B]which is SMD[/B])?
Apart from less convenience of soldering this element, should it be working fine?
I could not find a datasheet for RJP63K2 TO-263 but noticed that for different transistors, the [B]Power Dissipation[/B] value is different for different types of the body (TO220F and TO-263 for example).
Hello guys,
I have a shorted IGBT transistor RJP63K2 TO220F ([B]THT[/B]).
Could I replace... -
MOSFET equivalent K8A60DA
Hello guys,
I have a shorted MOSFET K8A60DA with the following characteristics:
[B]Type Designator: TK8A60DA
Marking Code: K8A60DA
Type of Transistor: MOSFET
Type of Control Channel: N -Channel
Maximum Power Dissipation (Pd): 45 W
Maximum Drain-Source Voltage |Vds|: 600 V
Maximum Gate-Source Voltage |Vgs|: 30 V
Maximum Gate-Threshold Voltage |Vgs(th)|: 4 V
Maximum Drain Current |Id|: 7.5 A
Maximum Junction Temperature (Tj): 150 °C
Total Gate Charge (Qg): 20 nC
Rise Time (tr): 25 nS
Drain-Source... -
Re: PANASONIC TX-P42X10Y Plasma TV damaged after a power spike
I checked it very precisely and no LED lights up at all, complete darkness on all boards.
Okay so I understand these voltages in standby mode are fine for +15Vs. Seems like the PSU if fine and probably the problem is the mainboard.
Just to confirm that, how exactly force the PSU to test 15V, VS and Vda voltages?
I found procedure on the forum for Panasonic TC-P60ST60 Plasma model which says:
[COLOR="DarkOrange"][I]Connect...Leave a comment:
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Re: PANASONIC TX-P42X10Y Plasma TV damaged after a power spike
I did two tests:
- one with mainboard connected to power supply, +15V is 0.29V
- second test with mainboard disconnected from the power supply, +15V is 0.8V
Isn't this +15V a supply for a mainboard?Leave a comment:
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Re: PANASONIC TX-P42X10Y Plasma TV damaged after a power spike
Thanks for your message.
Yes of course I have it, 230V AC on the input (I am in Europe).
So you think PSU is dead? It produces +5V and I also checked most of the components on the pcb.
If that +15V is the problem here, where should I be looking on the board to find a culprit? I will check schematic tomorrow but if there is anything obvious, I would be very grateful for any adviceLeave a comment:
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PANASONIC TX-P42X10Y Plasma TV damaged after a power spike
Hello, I have an PANASONIC TX-P42X10Y Plasma TV, purchased new in 2009.
Unfortunately plasma is not working at all after a power spike. Standby LED is not even working.
I did some quick tests, YSUS + ZSUS MOSFETS and IGBT's are free from shorts, diodes on these modules seems to also be fine, buffer board is free from shorts as well.
Anyway I focused mainly on the PSU, did some voltage tests with the results as below, I attached them on the photo (also please see attached PDF with the SERVICE MANUAL for this model, page number 43).
I understand... -
Re: LG 50PA6500 Plasma TV damaged after a power spike
I mean I tested them and they seems to be fine (both buffers).
Today I did a test with Y-SUS board connected without these IGBT's which were shorted.
Before that, when YSUS was connected, logic board status led was compeletely off. Now it works and at least I can do the PDP test, please have a look below (it works like that without 3 IGBT's and 3 high voltage capacitors as I took them off to have some more space for IGBT's desoldering).
...Leave a comment:
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Re: LG 50PA6500 Plasma TV damaged after a power spike
Just checked both buffer boards, probably no shorts! (tested every connector twice) so it's likely that PDP panel should be fine!
Tomorrow will try to test YSUS boards without these three IGBT's, if it fail then I'll order the new ones and we will see what happen when replaced.Leave a comment:
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Re: Y-SUS repair (EAX64282201) (LG Plasma)
Thanks for your message and pdf, definitely will have a look.
So in your case 8 igbts were damaged and what else?Leave a comment:
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Y-SUS repair (EAX64282201) (LG Plasma)
Hi,
I believe many people here have an experience with a broken YSUS module so I decided to create a new thread.
I got a LG plasma which is dead after a power spike, mainboard and logic has been already replaced, PSU is fine.
Now I am (at least) trying to fix Y-SUS which is EAX64282201.
What I already found:
- two traces were damaged like on the picture below, I already fixed them,
- diode D562 is damaged (resistance 0 ohm),
- visibly nothing else looks bad on the pcb,
I tested all transistors... -
Re: LG 50PA6500 Plasma TV damaged after a power spike
I will try, it should not make any damage I think. Probably won't work but lets try before I install the new ones.Leave a comment:
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Re: LG 50PA6500 Plasma TV damaged after a power spike
I will.
Q401 and Q402 are both RJP63K2, Q509 is: K8A60DA.
Any chance to test PDP without them?Leave a comment:
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Re: LG 50PA6500 Plasma TV damaged after a power spike
Hi again,
I did some further tests with the Y-SUS board, it doesn't really look good.
I tested all transistors for shorts to gnd and also between drain/gate/source. Resistors, diodes and capacitors also has been tested for shorts.
[COLOR="Lime"]- all traces has been restored, beside these two traces mentioned before, visibly nothing else looks bad on the pcb,
[/COLOR][COLOR="Red"]- diode D562 is definitely damaged, I desoldered it from the pcb and resistance...Leave a comment:
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Re: LG 50PA6500 Plasma TV damaged after a power spike
Thanks for the links! I will check it later, I mean the components on the YSUS pcb.
Is it possible to check if the PDP panel is working fine without a YSUS board? I think ZSUS is in good condition, same like PSU, mainboard and logic.
Aslo I just realized that not the track is burned out but the resistor R267, does anyone know what's the value it could be?Leave a comment:
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Re: LG 50PA6500 Plasma TV damaged after a power spike
I already fixed both traces before, that's pretty easy but ysus is still dead.
I mean any suggestions what could I do now? Ysus seems to be a hard thing to fix I guess. New one is expansive.
I probably would go with that and get one if that would be the last thing I need to do, PSU, logic, motherboard, zsus - these all seems to be fine.
I am afraid that after replacing ysus I will find out that PDP panel is damaged and all my effort is pointless.
...
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