Re: IBM Thinkvision 6736-HC9 No power
The Asus i posted about had the same issue no power, and turned out to be the mosfet shorted and took the regulator. I will plug the board in and check voltage though and you mean where I plug my 110 line in right?
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Re: IBM Thinkvision 6736-HC9 No power
What voltages do you get on the connector to the main board?
If none what voltage do you get on the BIG caps - care high voltage
I think that test on mosfet and regulator is only for shorts so they look ok to me.Leave a comment:
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IBM Thinkvision 6736-HC9 No power
Since I will Be placing an order for parts soon I figured I would try and save another 2 monitors in the process. I found this IBM Thinkvision in great condition got it home and NO Power. I took it a part and nothing obvious is bad, so I pulled out my DMM and started testing components.
Having remembered the ausus ve205 you guys helped me with a few months ago I started checking the voltage regulator and MOSFET along with the fues and resistor near the mosfet and filter cap.
All settings on DMM 200 Ohms
Fuse- good
Resistor in and out of circuit-good
Mosfet
black probe pin
1 to 2 = 1
1 to 3 = 1
2 to 3 = 1
and the same vise versa
also the same with the regulator
So I would assume that once again I need a new mosfet and regulator?
Now Ive never seen a board like this before theres 2 Filter caps attached to it is there something else I should check?
Posting pics of the board in a few mins..Attached Files -
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
Hi all,
TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!
I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!
A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about... -
Hello everyone, I have an ASUS FX506LI laptop that does not turn on, and I need help diagnosing the issue. Here is what I have checked so far:
Initial Symptoms:- The laptop has no power at all (no LEDs, no fan spin).
- No 3.3V or 5V present on the board.
- The power button (NBSWON#) reacts but only changes from 0V to 0.5-0.11V.
- Charger input (FETs PKCH2BB)
- Drain: 20V, Source: 0V, Gate: 0V (FETs not switching).
- BQ24780S Charger IC:
- VCC and ACDET are present.
- ACN / ACP, ACDRV, BATDRV, LODRV, HIDRV, ACOK, SRN, SRP – all 0V.
- Shunt resistor has 10Ω to ground.
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I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
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