Question about Allied Telesyn CentreCOM MR820TR (AT-MR820TR-15A) Networking Hub

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Not work correctly .

My hub leds blinking and not work correctly .

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Capacitor C2 on power suplly board will probably have dried out. Should be 47uf 25Volt electrolytic, mine measured I have replaced this capacitor on 3 of these units and all have come back to life.
Regards, Steve

Posted on Feb 25, 2010

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Posted on Jan 02, 2017

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Usb powered aoc monitor is blinking


Hello,

Active USB cables boost the USB signal not the 5v power lines. After about 6 feet the 5v power lines will only provide 4-4.5 volts and this is not enough to power the monitor. For this to work you will you will need to also use a powered USB hub at the remote end by the monitor. The USB hub will supply the power and the monitor needs and the active USB cable will provide the signal.

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1 Answer

Ethernet port led blinking but port not show


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My network switch LEDs all blinking even without LAN connected


Hi,

The LEDS blinking normally would indicate reset internally or when the unit has just been powered on. Continous LEDs lighting up or flashing with or without a connection is an indication of extensive hardware failure. This could have been brought about by a near lightning strike, a power surge or simply component failure. Unfortunately the repairs is not economically reasonable and therefore a replacement might be better off. Sorry.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

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JVC HD-ILA Projection TV


From the manual...

The POWER LED
and LAMP LED are
blinking
alternately.
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2 Answers

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maybe its not in the hub/router, or in your lancard has the problem. try to change the networking cable you are using it sometimes the cable has a teared wire inside, or probably the lancard or your hub does not work for the type of networking cable, there are 2 types of connection for UTP cable first is the Straight through cable and the second is the Cross Over connection. Try to mix and match the cable that you have and try to use another one instead..

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