Hi ive got 2 cq61 laptops but only one screen which im having trouble with both of the mother boards one when plugged in just has a white screen and the other when the screens plugged in works but has no backlight am i right in thinking that i need a new inverter?
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Re: compaq cq61 not working
I saw it is a backlight problem. Measure voltage on all pins on the input connector of the inverterLast edited by lord; 05-19-2014, 10:42 AM.Comment
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Re: compaq cq61 not working
try swapping the inverters, that should give you backlight on the one that displaysComment
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Re: compaq cq61 not working
I Think you have AMD or nvidia version of CQ61 try to reball the north bridge or GPU chip
in most cases reball solve the problemComment
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Re: compaq cq61 not working
If the screens plus the inverter are ok, then reball the gpu,
i don't think the north brige, cuz it work on extern.The Night Drop Down, I Will Keep Try Until..., You Never know.
Dushi Kòrsou, Nos Tei.Comment
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Re: compaq cq61 not working
Hi my friend reballed both of the motherboards and still have no backlight through motherboards I used in car dvd screen inverter and the screen lights up so its not the backlight bulb so im quite stuck is there a circuit on the motherboard that powers the inverter? I get 18v on inverter plugComment
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Re: compaq cq61 not working
What's the mobo number?Comment
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Re: compaq cq61 not working
Where would I find this?Comment
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Re: compaq cq61 not working
on mobo itself...I reckon it's quanta so it should look like DA0xxxxxxxx...Comment
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Re: compaq cq61 not working
It is DA00P8MB6D0Comment
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Re: compaq cq61 not working
There's schematic...
What's the behaviour of both boards after reball???
Still the same?Comment
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Re: compaq cq61 not working
Thankyou the one that the backlight wasn't working on but had a faint image is still the same (faint image no backlight) and the other one just stays on a black screen now instead of just a white screenComment
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Re: compaq cq61 not working
And both working fine on external?if so what port HDMI or CRT?Comment
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Re: compaq cq61 not working
Yer both work fine on external with hdmi cant find my vga cable to test vga thouComment
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Re: compaq cq61 not working
OK...Could you post mesurements of all pins of LVDS connector (CN1)...Comment
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Re: compaq cq61 not working
Right I tried to measure voltages on cn1 and managed to blow up the mother board lol so have to try and fix the other one (one with picture no backlight) on the inverter the voltages are as follows
1-18.64v
2-0.0v
3-3.26v
4-0.0v
Im sure pin 4 is ground and pin 1 is the right voltage but what should 2 and 3 be?Comment
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Hello everyone, I bought a Microsoft Surface Pro 5 and the touch doesn't work. According to what the previous owner said, the screen stopped working after an update. The screen has no physical damage, and the touch works for 1 second when it turns on and then stops working. I've tried updating the drivers, formatting, and returning to factory defaults, but nothing worked. Can you help me? -
Just had a customer bring in a M2 MBA A2681 that had had a screen replacement in April at another repairer. Since then, she has been getting intermittent kernel panics. It's an aftermarket screen, and of course it fails in diagnostics as the calibration hasn't been done. The error in the panic log is "No device added after powering on the rails".
It seems the original repairer has swapped the board and the screen to other MAC's, and said that it isn't a screen issue. From what I understand, by doing a quick search on Google, this is in fact a screen issue. The panic relates...07-31-2025, 08:37 PM -
Hi,
I have a MSI Optix MPG27CQ screen to fix, only half screen is working, I found a burned chip on the right buffer board (S270DP01V00_HF_SR) but I can't read the model. Can anybody help?...04-08-2025, 05:53 AM -
Hi.
I have 2 Lenovo laptops (A485 and T480) with identical USB problem.
When I plug in a USB 3.x device (USB storage), the USB ports are working normal.
But as soon I plug in USB 2.0 device (mouse, USB storage), all the USB ports stop working. Even if I plug in USB 3.x device.
The only way to get USB working again is disconnect battery and reset BIOS.
Has anyone had anything similar?
I have not yet tried another BIOS, but would that be the problem with USB?
Thank you. -
Hi! Does anyone have the boardview for the following MB:
Compaq CQ61-407EF
Compaq CQ61-405SF
Thanks in advance
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