Question about Onkyo TX-SV414Pro Receiver

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Unit will not power on. Unit is plugged in and standby light is on. what could be the problem? will it power on with blown fuse?

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Theres a fault in unit and is in protection due to this

Posted on Apr 22, 2015

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No power output or display.green standby light flashes.


Sounds like either a blown mainpower fuse or the thermal fuse for the power transformer. If the protect circuit was kicking in, the display would light up, but then turn off with a red blinking light. the green light with no display means the transformer is not getting power.

Dec 31, 2013 | Denon Avr-1610: 5.1 Ch A/V Home Theater...

1 Answer

Samsung LN40C610N1F. When plugged in, the red standby light comes on, but when I hit the power button the unit will not power on. The light doesn't blink or anything.


I see so many here with no sound/nopicture issues:

ISSUES:

1. IF sound main fuse/s are good.
2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.
3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.
4. Be safe and if you do not know what you are doing don't open the set.

Answers to issues:

1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.

2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.

Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.

What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.

3. Trouble shooting consists of the above and then at some point you have tobuy and try a board to see if it fixes it or not.

4. Safety first--no TV set is worth getting injured or even killed over.4_19_2012_3_53_26_pm.jpg

if set opened look for puffed up caps like these on the power board.

Apr 18, 2012 | Samsung 40 LN40C610 LCD TV

1 Answer

A friend gove me her lg plasma and ive plugged everything in and it hasnt even got a stand by light it has no remote


When no standby light the unit has a problem in the power supply circuit, you may need to first check the line fusee on the power supply to make sure its not blown. If the fuse is good then you may need to futher troubleshoot the power supply. All televisions have standby lights you just may not be visible because of a falty 5 volt stanby voltage..

Aug 03, 2011 | Televison & Video

1 Answer

Projector is completely nonresponsive. Almost like it has no power. No lights on, etc. Yes, power cord is plugged in.


There is an internal fuse that may have blown. I urge caution however, as this fuse does not open without a reason. It is possible that a power supply problem is preventing the unit from starting up as well. Usually though, this would show at least a standby light. Unless you have previous experience with the repair of similar units, I would not suggest any attempts now. There are potentially dangerous voltages present inside these machines.

Please update this if there are any sympoms at all when you attempt to power up the unit.

Thanks,
Dan

Feb 05, 2011 | Sharp XV-Z2000 Multimedia Projector

1 Answer

Cannot take unit out of standby mode. Brand new unit. . Was playing at relatively high volume and then it bounced to standby and now won't budge. Originally switched it by using "selector" button as I was...


It sounds like you've either cooked the output stage or blown a fuse or two. Some amps use relays to protect speakers whilst others use old fashioned fuses. Check the rear of the amp to see if there are fuse holders. If there are then unplug the unit and check each fuse. If they are marked as mains or power leave that alone it's for the 120volt input. the ones you want are usually marked left and right or just speaker. If the speaker fuses are cooked then make sure you use the same rating when replacing. Also check your speakers, they could be cooked too. Unlikely but possible. Some makers hide the fuses internally which can make things dangerous for anyone poking around. If in doubt leave it to a tech. If the fuses are blown replace them. check your speakers and plug in and swich on. If the fuses blow again go looking for a repair shop as you've possibly blown the output stage.

Apr 10, 2010 | Harman Kardon AVR 235 Receiver

1 Answer

No power


there is a fuse located near the ac plug inside on the circuit board, you can open the unit with a driver and remove it, hold it up to a light and if the wire inside is disolved, buy one at your local radio shack and try again, the amperage rating is usually a 4A , but read what it says on yours., if the fuse is not blown or the new one blows as soon as the unit is plugged it I would give up right there.
gd lk
E

Aug 03, 2009 | Philips Magnavox MWR20V6 DVD Recorder/VCR

1 Answer

No power to tv when i plug it in. don't know if all the way dead way to check it?


I really need the make and model number to help you.

My understanding of what you have said is that there is no standby light and no clicking sounds when you power on your unit. If this is true regardless of what type of tv it is there is a fair chance that the main ac line fuse is blown.

To determine if the line fuse is blown, remove the rear cover panel and follow the ac power cord to where it connects to the circuit board. The ac fuse is a small glass cylinder, about a half inch long. Replace the fuse with the same amperage and ignore the voltage rating. If the new fuse blows as well, your looking at involved circuit work which should be referred to an experienced repair technician.

Apr 29, 2009 | Televison & Video

1 Answer

Receiver does not power on. standby not on either. receiver is the onkyo tx-sr501


The standby light should be on. If it is not, then check the main fuse. WIth the unit unplugged, remmove hte top cover and check the fuse by the line cord. If that is ok, then you will need to check the primary winding on the standby transformer. That transformer has a thermal fuse internally located and that sometimes gets blown due to a power surge. If you do not have the equipment to test this, get a detailed estimate from a local servicer. The standby transformer usually costs arounf $25 or so.

Dan

Apr 26, 2009 | Onkyo TX-SR501 Receiver

1 Answer

Kenwood AR 404 burning w/ open flame.


You are literally playing with fire. Obviously the unit is in dire need of service! Please, take unit in for check out by a pro/tech

Apr 27, 2008 | Audio Players & Recorders

1 Answer

So how do you replace a fuse?


Hmm. Tricky problem. It could be the main fuse blown and the standby power suply is only working. Worts case senerio is that one of your amp is faulty and the unit is in protection mode. If the fuse is dead then you are lucky, just get the cover open, remove the power before hand, and do a little search, Most of the time it will be in a glass tube ( glass cartridge type) rated at 250VAC with a nominal of around 5 to 7 amps rated current. U can check it with DMM in a continuity mode. If fuce blown replace with the same rating and it has to be slow blow type. Cheers

Sep 11, 2007 | Onkyo TX-SR500 Receiver

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