Question about Hitachi 43UWX10B 43" Rear Projection Television

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43uwx10b help please

Here it goes... the same problem with power coming on. 2 flashing green leds 1 red led that (pulses with the 2 green, doesn't completely go out). Three main tube fuses are good. I took the boards out looked underneath checking for cracks in solder, didn't see anything. Have heard about checkin c702 (seems ok) and E994(can't find that). checked them. Relay works. But anyway had it all apart. Put it back together turned it on. Taaadaaa it worked. but the picture had a real bad problem with red.... so i was starting to try and diagnose the alignment issue....(about 20 minutes)... then the tv shut off again... and back to the same problem as before. Almost... Brought my DVM home from work but not exactly sure how to hook up to test for dc voltage on a circuit board . Please help... I work on trucks.. so i have some electrical exp but could use a little help with circuit boards and such.

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  • David Ishman
    David Ishman Jan 03, 2008

    i forgot to add that i can provide pictures if needed.

  • David Ishman
    David Ishman Jan 06, 2008

    i tinkered around with it the other day and found that if i unplug the first bridge(?) that connects the two boarids tv comes on like it should with sound but I have no picture. plug it back in back to the same so i guess my question is what goes through that connector(bridge)

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  • 1,153 Answers

Sounds like you are on the right track in troubleshooting, but for this set there are a few things that would baffle most techs. Like in your case it could be as simple as redressing you auto link and 4 event timer cable. There is a problem in this set when the Cabling from the front control panel is too close to the Blue CRT-yoke HV lead. Redressing this may solve your problem. For more info on this ctechnicians.com

Posted on Jan 06, 2008

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Posted on Jan 02, 2017

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For technical help:
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1 Answer

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http://electro-medical.blogspot.com/
http://homenol.blogspot.com/
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Aug 08, 2017 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

Help w/ the flashing green light


Good Day;

Cause #1 1. Red status LED, self-diagnosis error 44, check for open F9A06 on the Power PCB part # 283P128050 on the Power PCB 2. Red lamp LED, self diagnosis error 34. Check for 5-volts DC at J-9 connector pin 1 and 2 on the Engine Driver PCB if missing replace the Power PCB part # 930B921002 3. LED stops blinking after 70 seconds of plug in but will not power on. This model is equipped with a keyboard lock feature, this can be mistaken as a no power condition. To unlock the keyboard press and hold the "menu" button on the front panel for 10 seconds 4. LED stops blinking after 70 seconds of plug in but will not power on. Check for 3.2 volts DC at connector LE pin 3 and 4 on the Control PCB, if low suspect problems with the switches/buttons on the Control PCB part # 935D776001 5. LED stops blinking after 70 seconds of plug in but will not power on. Keyboard is not locked and key inputs at connector LE pin 3 and 4 check good. Suspect the E2P PCB part # 934C121001 6. (LED does not stop blinking after plug in) Disconnect the USB connector from the card reader to the front from the Chassis, if the LED stops blinking after 70 seconds replace the Card Reader part # 299P271010. 7. (LED does not stop blinking after plug in) Disconnecting the USB connector from the Card Reader did not help. Remove connector FC from the FMT PCB and plug the unit in, if the LED stops blinking after 70 seconds with FC removed suspect a problem on the FMT PCB (part # 930B924002), if the LED keeps blinking with connector FC removed suspect a problem on the DM PCB (part # 934C116002). 8. (LED does not stop blinking after plug in) On the DM PCB (part # 934C116002) check C81A2, C81A3, C81B3 and C81B4 (1000 UFD, 16V, 105C), if any are bad, replace all of them with part # 181P734030 (680 uFD, 16V, 105C). See Service Tip VS-78A 9. (LED does not stop blinking after plug in) On the FMT PCB (part # 930B924002) check C8F19, C8F21, C8F22, and C8F27 (16V 1000 UFD 105C), if any are bad, replace all of them with part # 181P734030 (680 uFD, 16V, 105C). Good Luck, big IRISH.

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1 Answer

Free Pulse


The following procedure will re-establish the communication link between the Headphones and the Wireless adapter, this is called "pairing". Before you start please make sure both the headphones and the wireless adapter are fully charged and turned off.
Note: The headphones and the wireless adapter come pre-paired from the factory.
1. Press and hold the power button on the headphones. See Figure 1.
headphone.jpg
Figure 1

2. Continue to hold the button down until the LED starts flashing red/blue in an alternating pattern. Release the button when the LED starts flashing red/blue. See Figure 2.
headphone-flash.gif
Figure 2
3. Once the headphones LED is flashing red/blue, press and hold the power button on the wireless adapter. See Figure 3.
receiver.jpg
Figure 3
4. Hold down the button until the LED starts flashing red/blue in an alternating patter. The LED will blink blue, then turn off for a few seconds then blink red/blue. Release the button when the LED starts flashing red/blue. See Figure 4.
receiver-flash.gif
Figure 4
5. Once both the headphones LED and the adapter LED is blinking red/blue, press the volume up button once on the headphones. See Figure 5.
headphone-volumeup.jpg
Figure 5
Once the headphones is paired with the adapter, the LED on the headphones will blink blue once every two seconds. See Figure 6.
headphone-flash2.gif
Figure 6
When the adapter is paired the LED will be solid blue. See Figure 7.
receiversolid.jpg
Figure 7
The adapter may continue to blink red/blue for a few seconds even after the headphones LED starting blinking blue. This is normal; the adapter may take a few additional seconds before the LED turn solid blue.
Once the headphones and the adapter are paired, it is not necessary to pair them again even if the batteries on both units are completely drained.
Additional Note: Repeated pairing will not improve the sound quality or give the headphones and the adapter a cleaner connection.

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1 Answer

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The symptom you have needs to be looked at by a qualified technician for proper diagnosis. There are 9 LED`s ( 8 green, 1 red) in the power supply that light up under normal condition. These LED`s are used to help pinpoint the area of trouble. For example, when power is applied all LED`s but one lights up. The unlit LED may indicate the +27 volt source is bad. That will alert the technician to check components related to the +27v line. Since there are 8 green LED`s and 1 red, each having multiple suspects leads us to Mr Spock`s comment to captian Kirk." there are endless possibilities"

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