Question about Hitachi 55HDS69 55 in. Plasma Television

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Hitachi 55hds69 powers on no picture blue led blinks 8 times

Replaced power supply already no change, main board leds blink in sequence and shut off during power on.(Which is how they should)
After blue led blinks 8 times it will go to amber.
appears that voltages are not getting generated for the x and y

Customer said problem occurred after power outage, tv worked initially for couple hrs then went off. Thats why we tried power supply first no change, could not find what 8 blinks mean

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  • Hitachi Master
  • 19,396 Answers

Re: "main board leds blink in sequence and shut off during power on"

Thta is clearly not power board problem, if you have anough knowledge to DIY, then buy the service manual and follow troubleshooting diagrams, you always need to test the parts before replacing them.

See below for getting service manual:

eBay.com.my: HITACHI 55HDX99 55HDT79 55HDS69 SERVICE REPAIR MANUAL

Hitachi 55HDS69 DW2-U Service Manual


Service Manual 55HDS69, 55HDS69DW2U


50DX10B 50EX8K 50VF820 51GWX20B Service Manual

Posted on Jan 30, 2009

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  • Master
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Check your power supply waltage and earthing properly working.

Posted on Jan 30, 2009

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25385779-zvi5jbxfx450ftsjwzjui5ep-5-0.jpg

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1 Answer

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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

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Does the TV shut down and the power LED

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Does the TV shut down and the power LED
blink 7
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No powerr


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1 Answer

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Best Regards and Semper Fi

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