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Sony str de-415

The power comes on and will flow through to the auxiliary component plugged into the back but the main display light does not come on and there is no sound. It doesn't appear to be getting power...there is no heat coming from the top of the unit like there normally is. Is there a fuse to replace or something simple to do to fix this?

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  • Audio Player... Master
  • 1,054 Answers

Check the main power fuse, it is either that or the power transformer

Posted on May 16, 2014

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Posted on Jan 02, 2017

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SOURCE: Sony STR DE-445 unit powers up but no sound

Check the fuse, Sony is known for its random problems with sound. The one I have you must tap it on the side. Its a flicker switch inside.

Posted on Feb 14, 2010

  • 336 Answers

SOURCE: my sony str de 835 display went out. sometimes

Most likly bad solder connections on the display board. Look for solder rings on the LCD. You must remove the front panel to gain access.

Posted on Mar 22, 2010

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Samsung UN55FH6200 replace main & t-con board. screen black can barely see display word when power on. Saw burn mark near where power cord plugs in on Power Board. Can the Power Board cause this


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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1 Answer

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Sounds like Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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1 Answer

I have a samsung LCD LA32C450E1 . Display goes some time when watching tv but sound comes. After switching off for 5 minute then display comes how should i solve problem


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
Some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

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1 Answer

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/.
Some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

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I assume that the Aiwa controls the other components, such as a CD changer. If these units are plugged into the rear of the Aiwa, then they may not be receiving power due to an auxiliary switch being off, or a bus breaker being blown. Breakers are on the back panel of the unit. They have a black thumbscrew that turns out counterclockwise. Take the fuse to Radio Shack to confirm if it is good or not, and good a new one if not. If the components are not connected to the Aiwa, then I have the ask the stupid question of are they plugged in, or is the surge protector that they are plugged into plugged in. Remember that even modern surge protectors have breaker switches, and may need resetting, especially after a snow or thunderstorm. Good luck.

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Before spend $$ on replacement boards, make sure anything attached to it is powered off. Unplug TV for 5mn to 15min. Plug back in and it should power on. If not leave unplugged overnight before spending on a replacement board. We have to do this 2-3 times per year when someone forgets to turn off auxiliary components (receiver, DVD, cable box, etc) first. It has always come back on.

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My panasonic viera lcd, model no. th-42px80u, flashes green when powered up, then a sequence of 10 red flashes. whats the problem ? joe


Before spend $$ on replacement boards, make sure anything attached to it is powered off. Unplug TV for 5mn to 15min. Plug back in and it should power on. If not leave unplugged overnight before spending on a replacement board. We have to do this 2-3 times per year when someone forgets to turn off auxiliary components (receiver, DVD, cable box, etc) first. It has always come back on.

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1 Answer

When i turn my tv on it powers off after a few seconds


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If you can find an assembly number on the main supply, you may be able to buy or exchange it for a repaired unit and do the swap yourself.

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1 Answer

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Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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