I’m new to solar power so excuse my very poor knowledge here, I need help!

I’ve got two solar panels, small 25watt ones.

On checking voltage with a simple volt meter, it shows a good 12v to 16v depending on light hitting the panel.

No issues here.

If I directly connect a 12v LED light, it powers it fine, light comes on no problem.

Issue:

If I connect the panel to my Charge controller for charging a battery, it reads NO AMPS and will not charge the battery.

This was with a cheap PWM charge controller, so I replaced that.

I now have an expensive EPEVER MPPT Solar Charge Controller 20A (TRIRON 2210N). This is a beautiful device, it shows watts, volts, amps etc on the display.

So I can see the amps from the panel is 0.00.

The volts is nicely sitting at 12-13v.

The indicator light for the pv shows its not active, not charging, but is connected.

Seems to indicate an issue with the panel maybe having a wiring issue or short (the indicator light is not on at all (should be green solid or green flashing to indicate connected ok and working or connected but not charging).

If that was the case, why would the panel power an LED light fine directly connected?

Would that not need some amps/watts to power it? How would it power the light if it was shorted?

I tried the same with the other panel, again shows volts but no amps. Powers an LED light directly without a problem (obviously not a great idea to power the light directly but I needed to test it somehow).

The panels are from separate providers, so they are not a bad batch as far as I can tell.

I’m very confused, and very new to this solar setup, help!

Press the “Off/Clear’ button to cancel anything on the display, and reset the microwave. This is a soft reset and will simply get you out of any program you have started. Press it when the cooking complete reminder appears on the display, for example, and the “Your Food is Ready" message will disappear.

Press the “Off/Clear’ button for three seconds to turn the “Control Locked” child lock off.

Reset the cooking program if “Off/Clear” was pressed accidentally. For example, press the “Defrost” button again, and turn the dial to select the defrost time you want again. Press "Start."

Perform a hard reset. Pull the plug out of the wall power supply, and wait a moment. Plug the GE microwave back into the wall power supply to reset any anomalies with the microwave’s memory. You will need to reset the time of day if you perform a hard reset.

Reset the time of day. Press the “Clock” button, and turn the dial to set the hours. Press the dial to enter. Follow the same procedure for the minutes and a.m. or p.m. Press the “Start” button to start the clock.

Bonjour,

J'ai changé la batterie de 21 MacBook Pro 2017. Sur une machine, le clavier ne fonctionne plus (fonctionnait avant changement clavier). Une idée de ce que je peux vérifier ?

Merci

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Hello,

I changed the battery of 21 MacBook Pro 2017. On one machine, the keyboard no longer works (worked before keyboard change). Any idea what I can check?

Thanks

@danj J'ai vérifié les câbles (ne sachant pas lequel est celui du clavier) et il ne me semble pas qu'il y en a un qui n'est pas branché ou sécurisé.

Il y a d'autres choses aussi :

• ventilateur tourne à plein régime
• ordinateur très lent

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I checked the cables (not knowing which one is the keyboard one) and it doesn't seem to me that there is one that is not connected or secured.

There are other things too:

• fan is running at full speed
• very slow computer

Hi @ozueun,

Try connecting an external monitor (TV?) to the laptop's HDMI port and check if it is turning on but just with no laptop display. Press Fn + F8 (both together) to toggle the display between the laptop only, external monitor only or both on together.

If there is a display on the external monitor there's a backlight problem with the laptop's display.

If you can't connect to a monitor then try shining a flashlight at an angle close to the laptop screen and check for any images.

They will be very faint if they are there so trying in a darkened room may help to see them.

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