The fourth iteration of the popular 7" Galaxy Tab line of Samsung tablets.

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Won't boot, keeps flashing boot logo

So, I have a Samsung SM-T230NU. When I tried to power it on, it flashed for a split second the Samsung Galaxy Tab 4 logo and then went blank. I figured it was out of juice, so I plugged it in and let it charge for an hour or so.

When I came back, it was flashing and going dark.

I tried a different cable. As soon as power was applied, it flashed and went dark again.

Now, the boot logo is showing for an even briefer amount of time.

I am suspecting the battery or USB port. I don't have parts readily available to swap, however.

Any ideas?

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It may be worth adding, when I plug in the device, without touching any buttons, the screen starts flashing the Samsung Galaxy Tab 4 boot logo.

I would guess a stuck power button, but the power button travels freely.

When I unplug the tablet from the computer, the flashing stops.

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BE sure your using the samsung charger. If the battery doesn't have enough juice to power up and it takes a samsung charger to recharge it when its that dead. I didn't believe it when I heard that but its true.

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You can try press the power on button and the volume up button for a count of 5 and release and then press both in again. This often happens after a firmware update.

hope this helps

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I tried the power + volume up buttons, and the device did not respond at all.

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Worked after i held it down for 15 seconds then released then pressed it in.

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It worked on micromax canvas nitro a311 too.

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This work well to my note 4 , thank u, I hold power button and volume up button for maybe 20-30 second.

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I had to press the power + volume down + home buttons for about 5 seconds and the phone restarted and worked

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Mine did this, but plugging it into another charger seems to have resolved the problem. It appears that if the tablet is dead and plugged in, it can charge for a short time and start the boot sequence -- if the charger cannot supply enough current for the running device the boot sequence aborts and the cycle starts over again. The power & volume up combination has no effect because the boot loader is invoked and it aborts like the normal boot sequence. So, find a charger that can supply enough current, it should then boot, then shut it down to charge properly.

Caution, the tablet should never reach a usable charge while cycling on and off. I would expect prolonged cycling to dramatically reduce battery life as well.

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i tried doing this and it works but when i remove the charger or turn off the tablet it keeps doing the cycle again.. what should i do?..

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I have one right now doing the same thing - the customer thought it might be the charging port. It was a dead stick, so I put the tablet on a good Samsung 2.0amp charger and after about a day I started getting this flashing I have a battery one order and will test it out once it arrives.

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Update - I put the new battery in - and it would turn on, but not charge.. new charging port in going in today -

https://www.facebook.com/Freytechnology/...

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Update - replacing the Charging port worked - I used my heat gun on high with a little flux to pop the old one off, just did the same in reverse to replace it.

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Worked after holding the volume down and home key in case of galaxy c9pro

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Mine is doing the same thing.

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Mine keeps saying no command

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So is mine. Just started today. Could it be the battery?

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Mine flashes the charging logo and goes blank. I've tried pushing the volume button. I've tried to push the volume button with the power button and I've tried different cables and nothing :(

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You might need to try using a Samsung charger mine was like that when I used an old charger but when I used the charger that came with my Samsung Galaxy s6 edge it worked perfectly

I hope this helps

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I did everything here to no avail. Reinstalled firmware n good as new ☺

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well i have a A5 2016 and it started after pressng _"-"volume and Power button for 5 seconds and then re pressing the two of them again. Tha nks for the options guys!

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the same happened to my A5 2016. Volume - and power saves it.

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Here's what's worked for me in the past. Take the back off with a credit card (carefully) then unplug the connector to the battery for 5 minutes. Re-seat the connector and attempt charging the device.

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With which mobile model? I have a C9 Pro that is stuck on a lightning sign inside a circle. Tried pressing home + power + button down like hard reset and it brings me to a blue screen that says 'A custom OS can cause critical problems in phone and installed applications.'... Volume up to continue, volume down to cancel. Did cancel two times - nothing happened. Frustrated.

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Use Turbo Charger.... it's work good.... one of my customer brings me same issue tab.... i put Turbo 2.1 Amp charger.. After Android is running 60 out of 60... Suddenly get it ON.

If no pls Call : 044-4860 7143

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My mobile j1 ace that i want to root but now it is start and the logo is blinking

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