This monitor is not powering on at all. I pulled out the power supply board and replaced 4 swollen caps. All caps are stock Samxon and were replaced with Nichicons from digikey. I replaced 2 220uf 25v and 2 470uf 25v. I am wondering if i should replace the other 6 Samxon caps even though they look visually good? Or is their another known problem with this model not powering on for some other reason?
-
-
Re: Mag Lt916s
You are already there. Change them all. Just repaired a dead Westinghouse 19" with all good looking Samxons inside, and yet it was dead.Originally posted by IRShiftyThere are 10 kind of people in this world: those that understand binary, and those who don't.- ASUS ROG Maximus IX Code
- Intel Core i5-7600K 3.8GHz
- 16gb GSKILL TridentZ RGB DDR4-3200
- 1 M2 SSD + 2 WD Blue 1TB (Mirrored)
- Windows 10 Pro x64
- GeForce GT1050
2 x Acer KA240H + 1 Vewsonic VP2130 21 (a cap replacement job
)
-
Re: Mag Lt916s
Did you check the main fuse on the AC input? Or the other two that are present, one for the 5v output to VBoard and the other for the inverter?Originally posted by IRShifty
See the attached picture:
If there's no 5V for the main logic board, the monitor would be dead.Attached FilesThere are 10 kind of people in this world: those that understand binary, and those who don't.- ASUS ROG Maximus IX Code
- Intel Core i5-7600K 3.8GHz
- 16gb GSKILL TridentZ RGB DDR4-3200
- 1 M2 SSD + 2 WD Blue 1TB (Mirrored)
- Windows 10 Pro x64
- GeForce GT1050
2 x Acer KA240H + 1 Vewsonic VP2130 21 (a cap replacement job)
Comment
-
-
Re: Mag Lt916s
Replaced all capacitors, checked main fuses, i have a different board then you posted but I did check some of the fuses and all the ones I tested passed fine, except the round one that is circled in the picture.
Also: there seems to be no power going to the main board so a fuse sounds likely.Attached FilesComment
-
-
Re: Mag Lt916s
Why did you not check the main fuse?.
That would be the first one I would check before ever looking at the caps.
If you have a voltage multimeter put it on OHM setting and check that fuse for continuity.
Or use a bread tie or something similar to jumper that main fuse. tab to tab. See if you get power.
Be carefull your getting a full 110v at that fuse.
Sorry if I am telling you things you already know. I am no pro.
Jacob^Learning to walk on rice paper without leaving a trace,Comment
-
Re: Mag Lt916s
That's what I suggested in post #3. No AC input = NO DC outputOriginally posted by Nama
That's the Main AC input fuseOriginally posted by IRShifty
There are 10 kind of people in this world: those that understand binary, and those who don't.- ASUS ROG Maximus IX Code
- Intel Core i5-7600K 3.8GHz
- 16gb GSKILL TridentZ RGB DDR4-3200
- 1 M2 SSD + 2 WD Blue 1TB (Mirrored)
- Windows 10 Pro x64
- GeForce GT1050
2 x Acer KA240H + 1 Vewsonic VP2130 21 (a cap replacement job)
Comment
-
Hi, I'm working on a MSI laptop, Motherboard number MS-16W11, GF-65 Thin 10SDR-459US. Went to another shop because the screen was flickering, but it was working well on an external monitor. The LCD was ordered and the laptop was returned to the customer and it no longer worked. It was then sent to another tech (by the shop who ordered the LCD) and the EC (ENE KB9028Q) was replaced with a donor from another MSI board with different board number and no programming was done. It looks like work was done on PU6 (TPS51225) as well as one of the GPU mosfets was burnt (I removed all three GPU mosfets).... -
The 55" LG has been in the basement for a few months without being used. Turned it on yesterday, set came on as it should and showed a complete screen for about 5 seconds (was on a broadcast channel but no antenna was connected), then the screen went mostly dark with about 1/3 of the screen on the right lighting up with brighter lines in that lit part (sorry, no pictures of that). Power LED was cycling too, preventing the TV from fully powering up.
Pulled the back off, all boards looked OK. Pulled the LED connector, turned the set on to see if it would power up but I don't belive it... -
Normally, I never post repairs this quick after I do them, because… I am usually very slow.
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
-
[HELP] Acer AN515-55 (LA-J871P Rev: 1B) – Board won't power on after GPU investigation – Suspecting Super I/O or PCH
Hi everyone,
I'm working on an Acer Nitro 5 unit with the following specs:- Motherboard: LA-J871P Rev: 1B
- Model: Acer AN515-55-59MT
- S/N: NHQ7JAL00403906A973400
- SNID: 03902728734
Initial Issue
The laptop initially presented graphic issues and driver failure (Code 43) for the GPU.
After preventive maintenance (cleaning, thermal paste, etc.), it powered on normally. We disassembled it again to inspect the GPU, reassembled... -
Hi,
I have a GOG20 LA-171P Rev1a board. Long story short, this laptop came to me not powering on. I found a short to ground on the KB9022. I replaced the KB9022 and programmed it with a CH431A. The laptop worked for about three days but then stopped powering on again.
I discovered that a small chip, the SY8388BR, was shorted to ground. I replaced it, and once again, the KB9022 was shorted to ground. I replaced it again, but this time, the pad for pin 1 on the mainboard fell off and wasn't connected to anything. I decided to program the KB9022 with the same BIN file as...
Comment