Question about Sony MHC-RXD5 Shelf System

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No Power No Sound Flashing display

I forgot to unplug the power supply the the removing the top cover short circuited the board. Not sure whats blown. Power coming through yet no sound and lights going wonky.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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tvtek
  • 1284 Answers

SOURCE: No sound or picture, just a blinking light

The next time it goes out, count the flashes that the timer light does and thats an indicator of what is failing. Here is a chart of said flashes and there codes.

Posted on Feb 12, 2007

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  • 1 Answer

SOURCE: green flashing light - no picture

If the green power light is blinking and you have no picture, then your light bulb has burned out and needs to be replaced. It is not a cheap bulb to replace. If the TV is less than 1 year old it should be covered by the warranty

Posted on Nov 08, 2007

thegoshem
  • 61 Answers

SOURCE: Green light flashing on back of unit near power cord also green light flashing on motherboard near power supply plug in.

I would suggest trying to replace the power supply. If that does not fix the issue, i would need to hear more about the computer.

Posted on May 06, 2009

welcomejee
  • 10594 Answers

SOURCE: kv-34hs420 Standby light blinks 6 times. Power supply issues?

Replace IC6501 and IC8002 at same time, both have same number and located parallel on DZ board. Part number is as follows..
670581001 MCZ3001DB
Available in Part Store.

Posted on Jun 26, 2009

RedZone133
  • 25 Answers

SOURCE: lamp will not come on. Press power button, fan

You might not be getting power from the ballast, it may be gone.The ballast is what gives the lamp it's major charge of high power.

Posted on Oct 27, 2009

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1 Answer

My fuse blew in my Samsung 53" Plasma TV. I changed it, but it's blown again? What should I do next?


The fuse blown because theres a short circuit connection in the PCB power supply of your television.Please check the power supply inside,remove the back cover to see the power supply section.unplug first to avoid electric shock.Will you check the bridge type diode first.If the bridge type diode or diodes is shorted the fuse is always blown.Using digital tester check diodes,regulator transistor,and other transistor around the power supply.

Jul 16, 2011 | Televison & Video

2 Answers

LG 23LS7D television. It does not turn on. The little light no longer even comes on. My guess is that the power supply is toast. Can the power supply be replaced? Is it a DIY job? Or does this tv have...


Here is a link to a replacement power supply for your TV available on Ebay:

http://cgi.ebay.com/LG-23LS7D-Power-Supply-Part-EAY3302450-1-/330568764504?pt=LH_DefaultDomain_0&hash=item4cf76f0c58


The repair / replacement procedure is not extremely difficult if you have some basic electrical safety knowledge and some basic electronics repair skills.

You will need to unplug the power cord from the unit, and then remove the rear access panel or the entire rear cover as required in order to access the circuit boards inside.

First check the condition of any fuse on the circuit board or anywhere in between the board and the power cord inlet to be sure that the problem is not just a blown fuse. Replace fuse with an exact match if necessary.

If the fuse is good, then unclip and remove the various electrical wire connectors leading to the power supply circuit board. Then remove the screws securing the circuit board to the TV frame and then remove the power supply circuit board. Be sure to avoid touching any large capacitors on the circuit board which can retain a nasty charge even after the unit is unplugged.

Then just screw in the new circuit board and connect all the wire bundles to their appropriate connectors on the new circuit board and then replace the rear cover. Then plug in the power cord and test.

Good luck.

Jun 12, 2011 | LG 23LS7D Television

1 Answer

Power button light flashing, display will blink on and off. What can I do?


Check the power supply and the inverter circuits. Try it on another PC first also.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder jopints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed VIEWSONIC monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Jun 08, 2010 | ViewSonic VE510b Monitor

2 Answers

Blank monitor, flashing power light?


Ok, so the the monitor is getting power, there could be a few faults for this problem, first the power board needs to be checked for bad capacitors, this will involve you opening the tv, at the back you see a few screws have a good route around though there could be screws hidding under stickers or have little black grommets covering them, once all the have been located and undone gently prise the back away from the front, its normally just plastic clips holding together now so be carful not to break them.
Considering thats gone well, and the back cover is removed, with the screen facing downwards on somthing soft ie a towel or somthing have a look on the pcb(circuit boards). The power board will be the one you connect the power to, so locate that board and have a good look at it. The componants that you are looking for are barrel like in shape with silver tops, if you see any brownish colour liquid resadue on them or on the board the cap is blown, also if the tops of the capacitors are domed or slightly pretruding they will also need to be changed, they are ment to flat at the top.

Second possibility is that the lcd back light could have blown therefore that could explain the black screen, these are harder to change and would be better to take it to your local appliance shop to get it repaired.

Finally the inverter may have failed, this is the board that scambles the signal from the computer into the picture you see on the screen, if this has gone then the monitor would power on properly but the screen would flicker or you would have a greyish tinge to the screen as though the monitor was on but no picture, out of these possibilities i think you can route out this problem because you have a flahing green light.

The first solution at the moment is the best option for a fix so try that first, post back what you find and will run you through how to change the capacitors if there are any that have blown. Make sure you check the tops of them thoroughly ensuring they are not domed or pretruded.Cheers.

Feb 01, 2010 | Computers & Internet

1 Answer

FLASHING C4 76


Had a Ploma unit - same as Rheem. Not sure what C4 is...but code 76 is lost comm between the remote control and the burner control module. Unplug unit = take front cover off...their should be a square circuit card assemble in front of you. Top blow capacitors are typically used in todays electronics, and they have an obvious curve if the capacitor is blown. If the caps appear swolen on the top they are blown. STOP! If your unit is less than 5 years old..contact manufacturer for defective power supply. This particular problem is known to the MF...If you have a Poloma/Rheem they send you step by step instructions on how to replace this board yourself...if you're slightly technical you can do this repair yourself.

Oct 26, 2009 | Rheem Paloma PTG-74PVN / RTG-74PVN...

3 Answers

Ilo tv model lct27ha36 does not go from standby to on


Are you doing this thru your remote? Did you try to manually turn it on thru the button of your tv?

Aug 01, 2009 | Televison & Video

2 Answers

LG Washer wont start, no power


Make sure there's power getting to the washer. Check for a tripped circuit breaker or a blown fuse. Check the wall socket for power. Sometimes the power cord disconnects at the washer, if this is the case, the wiring must be repaired or replaced.

Jun 21, 2009 | LG WM-2277HW Front Load Washer

2 Answers

Power supply fan is makeing a lot of noise


1) Unplug the power cord and give the fan a good cleaning
with a soft paint brush and a vacuum cleaner.

i.e. Let the fans spin up by the vacuum and than bring
the brush against it.

2) If this fails, it's time to replace the fan:

a) Upgrade or replace the power supply enclosure with more
power/higher quality.

This is usually a good investment anyway.

b) Replace the fan only as described below:


Unplug the power cord

Open up the computer (remove sides)

Unplug all the power supply harnesses from
the mother board, drives and chassis fans.

Unscrew and remove the complete power supply
enclosure at back of computer (ie top of the tower)

Vacuum it out as much as possible.

Disassemble the power supply enclosure by removing
more screws and removing the metal cover.

Unplug the fan from the circuit board, remove it
and take it to a computer store/ builder.

buy another fan just like it

reverse the process to put your computer back together.

1) A new power supply should cost $65 to $120
depending on power and quality. The bigger the better.

But make sure it fits mechanically into the existing chassis
and that the AT generation matches ***********-board.

2) A new fan should cost $15 to $25. Makes sure it runs on
the same voltage, and that it is physically compatible.

Martin

Apr 24, 2008 | Computers & Internet

2 Answers

F-17 neovo monitor stopped working. power light is flashing yellow


The flashing light indicates a diagnostic state called protection.
When the Monitor goes on protection there are only two possible causes.

1 The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or a broken contact, identified an internal fault and kicked in , starting the flashing light.


If you are in situation one, then the monitor will reset just unplugging power cord for one or two hours, sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occurr suddenly are a blown capacitor on power board, the inverter board powering up backlight lamp has blown, or a fault on main lcd controller board.
check also the video cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.

Check connectors, try moving the video cable, and if the cable is not built in, then also try a replacement cable.
Regards

Jan 03, 2008 | Neovo AG 17" LCD Monitor

4 Answers

Philips hts3410d


I solved this problem on my HTS3410D.

Inside there are two circuit boards, the power supply board and the audio/video board.
  • First, unplug your unit and let it sit for a few hours.
  • Now open the unit up, and unplug all of the connectors going to or from the power supply board. You can easily tell which board is the power supply board because it's the one the power cord plugs into.
  • Unscrew the four mounting screws that hold the board to the case.
  • Using a pair of needle-nose pliers, squeeze the two white plastic clips that hold the board to the case (one at a time), while gently lifting the board away from the case.
  • Now that you have the board out, feel the tops of all the capacitors (they look like this). Healthy capacitors should have a totally flat top. (There is probably one that is covered in some sort of heat shrink, so you can't feel the top.)
  • One capacitor most likely has a slightly bulging top. That is the culprit.
  • Using a soldering iron, carefully remove the busted capacitor, making sure to note which side the stripe is on.
  • Buy a replacement capacitor at Radio Shack or www.digikey.com that has the same capacitance (e.g. - 1000uF) an equal or greater voltage, and an equal or greater maximum temperature.
  • Insert and re-solder the replacement capacitor in the same orientation as the one you took out, then trim the excess leads.
  • Reassemble your system, and you're done.
The capacitor that died on mine was 1,000uF, 16V, 105°C. It was located fairly close to where the power cord comes in to the board. I replaced it with a 1,000uF 50V capacitor, and the system powered right up like a champ. The entire process took me about an hour.

I hope this helps some other people have similar results.

Oct 10, 2007 | Philips HTS3410D/37 700W DVD Home Theater...

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