Question about BOYO VTM4000 4-Inch Rear View Monitor

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Unit ceased to function. Prior to this the unit was flickering and functioning intermittently. Any common causes of this?

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Loose power wire perhaps

Posted on May 01, 2015

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Posted on Jan 02, 2017

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1 Answer

Temperature light red, coolant full?


Yes, but does the fan cut in? maybe the temperatur sender unit is faulty. Maybe the thermostat has ceased to function correctly.
There are a few things to check.
Neglecting to do so can cause a head/head gasket failure, probably best to see to it as soon as possible

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The power to the circuit board is passing through components that are breaking down. Eventually all function will cease and the unit will not respond at all. A power surge may have passed high voltage and current to the unit causing stress on the electronics inside. professional service can trace the circuit and find the damaged parts.

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Keys not working


Well, the most common cause of a non-functioning keyboard is a driver issue. If the keyboard driver has been updated by normally a third party update application, then the most recent driver must be uninstalled by using the "rollback" feature. To check this, go to "computer management" then "device manager" then find the keyboard, then "right click" on "properties" go to "driver". Check the date which the driver was updated. If was recent, around the time the keyboard ceased to function, then click on "rollback". You may have to use an external keyboard with a USB plug to do this, as of course the laptop keyboard doesn't work.
A second option is to attach an external keyboard and initiate a "system restore". Go back to a date in which you believe was "prior" to the keyboard issue.
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There is a forth possibility. If the laptop has been opened for any maintenance, and the underside of the keyboard was exposed, any dust, and I do mean "ANY", just one speck, can cause issues. This is not likely or common.
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Center channel stopped working during football game. I plan to check the center speaker with another source and then send it to the shop assuming the speaker is OK. Is this a common problem?


For that particular unit, it does not seem to be a recurring problem-- though a certain channel (or input) ceasing to function on a receiver does happen from time to time. If you find out that the speaker is okay, you can look into getting the receiver repaired.

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How does the Timer and Sleep functions work for the SUMO KFR-70GW Heat Pump


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On the timer function, when you press the button, it will ask you the starting time and ending time of when the unit will start and turn off by itself. prior to use this function, the clock on the control has to be set.. On the sleep function, it will give you the option to turn off unit on 30 min. intervals. Just like on a TV.

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L.P. Propane Heater not staying lit Fairly new heater (Reddy) 30,000 BTU Piezo Igniter not functioning use long match and unit fires nice. plug in /turn on blower good once I let go of primer valve button...


Sounds like you have a bad gas hold on valve. I have a tip at http://www.fixya.com/support/r4258201-fix_gas_reddy_heaters_will_not_continue which explains the problem, how to fix it and where to get the parts. Let me know if you need more help.

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1 Answer

Mute function on the amp


A couple of questions to try and narrow this down:

1) What is the impedence rating for the speakers?

2) When the unit shuts down, will it recover on its own after a little while or do you need to power cycle it to get it to work again?

3) When the unit shuts down, is it hot?

Possible causes of this behavior:

1) Impedence rating too low causing the amp to work too hard and shutdown.

2) Excessive heat (caused by #1?) will shutdown the unit to prevent damage.

3) Possible intermittant short in the speaker wires somewhere? Loose connection?

A little more investigation will be required to find this. A repair shop would run this unit under load and monitor the outputs for heat and any spikes in the signal that could kick in the protection circuits.

Keep us posted on what you find.

Dan

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The turntable fan and light all share the same feed, first check wiring for loose connections the problem though is most likely with the controller

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1 Answer

Unit is behaving oddly


there is probly a short in the wiring some were

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