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No sound panasonic su-ch40

Turned volume down now now no sound at all.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

marsrover
  • 682 Answers

SOURCE: sound cuts when volume is turned up

check that power amplifier rating(how many watt)must be more than total speaker rating by 20% at least..
exampel:if speakers watts are 100 watt-amplifier watt must be 120 watt.

Posted on Mar 15, 2008

  • 6 Answers

SOURCE: I Have a technics Model No SU-500 stereo

go to technics web site to find out.

Posted on Sep 03, 2010

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2 Answers

Technics su-g75 amp goes to loud static after a few minutes


Hi Aawpharmd,

system control error.
please go for repair shop.
regards,
nuwan

Jan 13, 2014 | Technics SU-G75 Amplifier

1 Answer

Power indicator light blinks-7 times. will a new power supply fix it


Physically disconnect the SU board and the SD board. (See precaution # 5)

Plug in the TV and turn it on.

Does the TV shut down and the power LED

blink 7 times?

Yes

No

Replace the Panel and the SU board.

(See precaution #3)

Reconnect the SD board only.

(See precaution # 5)

Plug in the TV and turn it on.

Yes

No

With the SU board and the SD board still disconnected, remove connectors SC2 and SC20 from the SC board (See precaution # 6)

Plug in the TV and turn it on.

Disconnect the SD board and reconnect the SU board. (See precaution # 5)

Plug in the TV and turn it on.

Yes

No

Replace the Panel, SD, and SU board.

(See precaution #3)

Replace the Panel and the SD board.

(See precaution #3)

Replace the SC board.

(See precaution #3)

No

Replace the D board.

(See precaution #3)

Does the TV shut down and the power LED

blink 7 times?

Does the TV shut down and the power LED

blink 7 times?

Does the TV shut down and the power LED
blink 7
There is a sequence that you have to check to figure out which board is bad,

Feb 16, 2011 | Panasonic TH-42PZ700U 42 in. Plasma...

1 Answer

Picture went out and no audio, red light on power blinks seven times and repeats.


Physically disconnect the SU board and the SD board. (See precaution # 5)

Plug in the TV and turn it on.

Does the TV shut down and the power LED

blink 7 times?

Yes

No

Replace the Panel and the SU board.

(See precaution #3)

Reconnect the SD board only.

(See precaution # 5)

Plug in the TV and turn it on.

Yes

No

With the SU board and the SD board still disconnected, remove connectors SC2 and SC20 from the SC board (See precaution # 6)

Plug in the TV and turn it on.

Disconnect the SD board and reconnect the SU board. (See precaution # 5)

Plug in the TV and turn it on.

Yes

No

Replace the Panel, SD, and SU board.

(See precaution #3)

Replace the Panel and the SD board.

(See precaution #3)

Replace the SC board.

(See precaution #3)

No

Replace the D board.

(See precaution #3)

Does the TV shut down and the power LED

blink 7 times?

Does the TV shut down and the power LED
blink 7 times?

Feb 15, 2011 | Panasonic TH-42PZ700U 42 in. Plasma...

1 Answer

Just bought panasonic th-42x20k, when turn on hear a clicking sound and then turn off, red light under screen flashing 7 times


Red light flashing indicates that "SC voltage is floating". I'd recommend replacing the SC, SD and SU boards. Also know as the Y sustain (SC), Upper and lower buffer boards (SD, SU).
I suggest you contact your local Panasonic Service Agent as parts are only available from Panasonic and are quite expensive.

Jan 18, 2011 | Panasonic VIERA TH-65PV500 65 in. Plasma...

1 Answer

Slight crackle on left speaker if turn volume up


the speaker is bad when you set the loud button on, you're putting more pressure on the speaker beacuse its bad it wll make that crackle sound. My advice change it.

Mar 03, 2009 | Panasonic CT-27G7 27" TV

1 Answer

Volume suddenly turned down during commercial


shut off the all BBE and surround and the AL sound page 27 of the manual.

Feb 22, 2008 | Panasonic VIERA TH-65PV500 65 in. Plasma...

1 Answer

PANASONIC SA HE9 RECIEVER 5.1


If the sub has a volume control, turn it down then turn up the volume on the amp to the very high volume you mentioned. If it still has very low muffled sound, then we know the problem is about the amp.

Apr 24, 2007 | Panasonic SA-HE90 Receiver

1 Answer

CANNOT LOWER THE SOUND


dude sounds like if you cant turn down the volume it is an issue with the set your watching it on man!!! This sounds like a trick q???? OMG Ok sorry if its not try to connect to a real tv with a volume control and then the sound will turn down!?

May 09, 2006 | GoVideo DVR4250 DVD Player/VCR

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