Question about Pioneer SD-643HD5 64" Rear Projection Television

4 Answers

Can't get full power on

When I turn on the main power on my set the light goes green for a second then turns to red and I get no power. Any suggestions? Looking for fuse location too.

Posted by on

4 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 2 Answers
Re: can't get full power on

You all have convergence chip issues and they need to be replaced go to

Posted on Aug 17, 2009

Re: can't get full power on

I have this exact same issue; search engine took me here. I have been experiencing this problem for about a year now. When you power on, the RED standby light goes out, the power light turned GREEN, you might hear a small pop sound, then the RED standby light goes back on. YOU HAVE BLOWN A FUSE. My problem is this is occuring much more frequently now and I'm going through fused like crazy. So I'm looking for a long term solution. To replace the fuse, turn off the standby power switch on the front. Unplug the power cable. Open the back panel. All logic and power modules are on the bottom of the cabinet. Therer is a large power module in the middle. In the middle of this module are 3 fuses. The one that typically blows is the one in the middle. It's a 5 amp fuse, but double check the rating before replacing. Good luck, Mark

Posted on Aug 26, 2007

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer
Re: can't get full power on

Jason. i got this info from ladywinn. fuse 302 5 amp and 303 5 amp. Replace both stkics big black ics- stk 392-180's. Good luck!

Posted on Jan 11, 2011

Re: can't get full power on

I have a call in with Pioneer for help. Some additional info. Parts can be found at . The fuse that is blowing is identified on the PCB as FU303. The part number for the Power Assembly is AWV1887 (OLD model) or AWV2011 (New Model). Depending on what Pioneer says, I'll probably replace the Power module; $311.

Posted on Aug 26, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Trying to replace lamp in HDTV and having trouble. Does not function correctly after putting in new bulb. Boots up and then visuals go black and the green power light keeps flashing. Help?

Panasonic DLP TV Bulbs

Make sure its an original Osram or Philips bulb inside the housing. If its a cheap lamp it will act this way. If it is an original lamp, then you may have a power supply issue. It shouldn't affect your TV but you may want to try resetting the lamp timer by following the instructions that came with the lamp.

TY-LA1001 Timer reset

While pressing the VOL- button on the projection display, hold down the number 0 button on the remote control at the same time for more than 5 seconds.

Aug 15, 2015 | Panasonic Pt-52lcx16 Projection Television

1 Answer

Hitachi model# 50ux23ka no power???

The green ones are each tied to a voltage source in the power supply of this set, try to see if one goes off or dim before the others, the red one should always be on.

If one can be seen to go out first or dim first that voltage line is being held down or has a problem.

Its meant to be a way to know which voltages are up and also to narrow down where a problem might be.

Dec 12, 2012 | Projection Televisions

1 Answer

Mitsubishi big screen HD 1080 series model WS-55809. it switched off one day. and when i turn it back on it switches right back off. red light in front. what part do i need to fix it/

That model does not have a red light---Green.

If set powers up for a few seconds (green power light) and goes out do the self check the model indicated has:

On front of set (not with remote) press and hold both the input and menu buttons for at least 5 seconds and release both.

Green power light will blink a two digit error code like 2 blinks, 2 blinks a pause and repeat it several times.

Let me know what error code you find (if you have unplugged the set that will clear all errors and you have to plug it in and try to turn set on again---when it fails do the self check)

Mar 31, 2012 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Turn tv on,picture good for 4 seconds,then green curved line like a rainbow all green,then 4 green sequence flashes,picture goes out theN volume continues for 2 seconds then out front red power light then...

This is a set with bad picture tubes-not available except on rebuild basis.

Are you seeing bright green screen and then set shuts off?

Let me know so I can help--8 blinks is AKB error.


Sep 15, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Tv will not turn on

This is shutdown on this set---inside the set on the power board and or the main board should be several LED's(1 is red and the rest are green) look in side with the set turned off and when the set is turned on do all the green leds light? if they light for a moment and then go out look for any of them that go out first---It could also be a short on the supply to the convergence circuit---only way to know that is to unsolder the 2 convergence IC's and see if set comes on--it can also be a vertical or deflection problem--this set is very well protected and will shut down for a number of reasons---if you have questions or need more information contact

Aug 09, 2009 | Hitachi UltraVision CineForm 55VG825 55"...

1 Answer

Set wont turn on

IF this is a dlp tv , the first thin you need to do is replace the lamp. J.D.W.

Jun 18, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

When tv is turned on green light comes on then goes to standby

had the same problem on mine.
Found loose solder terminals on the main power transformer, resoldered fixed it up about 5 min.

Nov 01, 2008 | Pioneer SD-532HD5 53" Rear Projection...

1 Answer


yeah, I have the same issue... The tv worked fine, and now it will not turn on... the light turns green, then turns off and goes red...

Aug 03, 2008 | Pioneer SD-P5795W 57" Rear Projection...

1 Answer


same problem here

Dec 20, 2007 | Pioneer SD-P50A3-K TV

2 Answers

No power on Hitachi 50UX588

Most likely have a regulator problem. Remove rear cover, look down on the main chassis, turn tv on watch the board to have some colored led's lit, usually a red one and couple of green. If the red is out, its your regulator, if a green one other problems off the circuit with green led are causing the tv not to power up.

Jul 22, 2007 | Hitachi 50GX49B 50" Rear Projection...

Not finding what you are looking for?
Pioneer SD-643HD5 64" Rear Projection Television Logo

Related Topics:

492 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pioneer Projection Televisions Experts

Jaime Hernandez

Level 3 Expert

2267 Answers


Level 3 Expert

57192 Answers


Level 1 Expert

19 Answers

Are you a Pioneer Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides