Re: Asus VS278 not powering on
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No1baggiesfan
Member
Last Activity: 11-24-2022, 01:31 PM
Joined: 01-31-2019
Location: Newcastle
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Re: Asus VS278 not powering on
Thank you for posting, I had a similar manual already, but without any pictures lol, the schematic would make things a lot easier tho, there isnt much on the web regarding this monitor....Leave a comment:
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Re: Asus VS278 not powering on
There is no legend anywhere, the only markings are on the HDMI board,
black - TP75
Brown - TP76
Purple -TP77
Grey -
Blue - TP72
orange -
yellow - TP78
green - J8 J5...Leave a comment:
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Re: Asus VS278 not powering on
BumpLeave a comment:
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Asus VS278 Monitor schematic required
Asus VS278 Monitor schematic required please.
TIY -
Re: Asus VS278 not powering on
Brain fart moment when tested previously, I hadn't bridged the 240v switch DOH!
Ok, 327v across the cap, so I tested v's on the multi lead:
green 0v
yellow 0v
orange 0v looks like ground anyway
blue 5v
grey 5v
purple 5v
brown 0.02v
black 0v
Cannot find a schematic for this board/monitor so I cannot say what voltages should be present at that connector.Last edited by No1baggiesfan; 09-29-2022, 08:54 AM.Leave a comment:
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Re: Asus V278 not powering on
Thank you for the reply.
240vac at all points before the rectifier, both sides of cap test 240v too, but only 20v across it.Last edited by No1baggiesfan; 09-28-2022, 05:34 AM.Leave a comment:
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Re: Asus V278 not powering on
It is a VS278 lol, cannot edit title
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Asus VS278 not powering on
Hi all,
My daughters BF gave me this monitor to "look at"
It showed a blue LED the first time it was powered, but would not turn on, saw a couple of threads on Asus monitors here, left it a few days, not even a blue LED now.
Story so far......
Fuse tests ok for continuity 0.03 ohm
Big cap
100uf 450v. Old one showed 8.8vdc on live test, replaced it and it now shows 22vdc and dropping, I presume it should be at least 240v ?
Replaced most of the electrolytics, just have 2 left to change.
Havent done V tests on... -
Re: Another Yamaha
Update again.
Amp still working, yay
Now I need to fix the on/off button on the remote, :/Leave a comment:
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Re: Another Yamaha
Update.
Looks like she's back to her old self again, everything is working as it should, watched a couple of movies, no issues, does seem to be a tad warmer than I remember, maybe it's just me being paranoid lol.
Anyway, want to say thank you again to R_J for his time and help and everyone else who also joined in.Leave a comment:
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Re: Another Yamaha
It does, but it it hadn't lit since last weekLeave a comment:
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Re: Another Yamaha
Firmware is already 1.80
Just turned the amp off, red standby light is now on lol ??Leave a comment:
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Re: Another Yamaha
I'll test that tomorrow, but for now it seems to be ok, it's working at least.
One other issue I noticed is that when I press 'sur decode' it goes into 'straight' mode when it should go into 'neo' modeLeave a comment:
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Re: Another Yamaha
It's not a 'protect' error, it's the reading from the hidden menu
Amp is hooked up and working so far thoughLeave a comment:
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Re: Another Yamaha
Still no stand by led ?
Ps now showing 80/129Leave a comment:
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Re: Another Yamaha
I hadn't tried
Ok, reset amp, powered up and it stayed on
I guess now we reassemble it and hook up some speakersLeave a comment:
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Re: Another Yamaha
Autocorrect on iPhone, sorryLeave a comment:
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Re: Another Yamaha
Dry joint on regulator :/
I now have -12v -18v 0v on regulator
-18v and -19.7v on resistorLast edited by No1baggiesfan; 02-13-2019, 03:55 PM.Leave a comment:
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Re: Another Yamaha
R1238 reading 9.9 ohms
20.9v on both sides
Shouldn't it be 0.22ohm ?Leave a comment:
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