Question about RCA P46924 46" Rear Projection Television

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P46924 unit wont power up. when you press the power button you hear three thumps from the audio but does not come up. have 166 volts on pin three of the flyback causing three resistors to overheat in that circuit. horiz. output is fine. smps seems to be fine. something is causing the unit to go into shutdown. part locations for the resistors are: r14512,r14110,r14159. all three are linked to pin three on the flyback.can't find anything shorted. any help would be appreciated. chassis is a ctc195m.

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  • Bloodtrail Nov 15, 2007

    I have the same problem. When I turn on the tv I get three thumps and can see some arching going on inside from the back. The part that is arching has two red wires coming out of the top. The part sits close to the vent holes in the rear of the tv by the cable jack. Is this a user replaceable part?

  • johnlove Dec 14, 2007

    I have the same problem and have ordered the FBT and a new HOT. The resistors are burned such that i can't determine their value and don't have a schematic to work with. Would you happen to know the values for these 3 resistors?

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  • Master
  • 934 Answers

Unsolder collector and if the unit stays replace p/n#239111 FBT - and those resistors. Also check the solder on L14401, it's the coil off the base of the HOT (Horizontal Output Transistor). You might want to re-solder it anyway just for good measure.

Posted on Jun 01, 2007

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Check engine light for volvo 850 wont go off wat else can be the problem if i got a full tune up and put in new spark plugs plus it trembles alot and it shakes when i start it up plus wen i put it on...


Hi, I recommend you access the OBD panel to extract the trouble codes. Then send us the trouble codes for further advice. On 850 models the DLC is located in the engine compartment in front of the module box, behind the passenger side headlamp.

  1. Open diagnostic socket cover and install selector cable into socket No. 2 for fuel injection codes or socket No. 6 (except Motronic systems) for ignition codes.
  2. Turn the ignition switch to the ON position.
  3. Enter control system 1 by pressing the button once. Hold the button for at least 1 second, but not more than 3.
  4. Watch the diode light and count the number of flashes in the 3 flash series indicating a fault code. The flash series are separated by 3 second intervals. Note fault codes.

1f there are no fault codes in the diagnostic unit, the diode will flash 1-1-1 and the fuel system is operating correctly.
  1. If diode light does not flash when button is pressed, or no code is flashed there is a problem with the soft-diagnostic system, proceed as follows:
    1. Check ground connections on the intake manifold, and the ground connection for the Lambda-sond at the right front mudguard.
    2. Check the fuses for the pump relay and the primary pump. On 240 models, fuses are located inside the engine compartment on the left side wheel well housing. On 760/780 models, fuses are located in the center console, just below the radio. On 740/940 models, fuses are located behind the ashtray. Access can be gained by removing the ashtray, and pressing upward on the tab marked electrical fuses press. On 850 models, the fuses are located on the left side of the engine compartment behind the strut mount plate. The fuses on 960 models are located on the far left side of the dashboard. The driver's door must be open to gain access to the fuses.
    3. Remove glove compartment, and check control unit ground connections.
    4. Turn the ignition switch to the OFF position. Remove control unit connector and connector protective sleeve.
    5. Check diagnostic socket by connecting a voltmeter between ground and No. 4 connection on the control unit connector. Reading should be 12 volts. If no voltage is present, check lead between control unit connector and fuse No. 1 in the fuse/relay box.
    6. Turn the ignition to the ON position, and install selector cable into the No. 2 socket on the diagnostic socket. Connect a voltmeter between ground and No. 12 connection on the control unit connector. Reading should be 12 volts. Press the button on diagnostic socket and note reading. Reading on the voltmeter should be 0 volts. If no voltage at the control unit is present, take reading at the diagnostic socket connector. If reading remains at 12 volts when button is pressed, check diagnostic socket.
    7. Connect a voltmeter between ground and the red/black lead on the diagnostic socket connector. Reading should be 12 volts.
    8. Connect a suitable ohmmeter between ground and the brown/black lead in the diagnostic socket connector. Reading should be 0 ohms.
    9. Turn the ignition to the OFF position. Connect ohmmeter between diagnostic socket selector cable and the pin under selector button. The ohmmeter should read infinity. Press the button and note the reading. The reading should be 0 ohms.
    10. Connect a suitable diode/multimeter tester, or equivalent, between the diagnostic socket diode light and the selector cable. Connect red test pin from the tester to pin under diode light and black test pin from tester to selector cable. A reading on the tester indicates correct diode light function. With no reading on tester, replace diagnostic socket.
    11. Check the system relay/primary relay by connecting a voltmeter between ground and the No. 9 connection on the control unit connector, then connect a jumper wire between ground and No. 21 connection on the control unit connector. The relay should activate and the reading should be 12 volts.

  2. Press the diagnostic socket button. Note any additional fault codes.

The diagnostic system memory is full when it contains 3 fault codes. Until those codes are corrected and the memory erased, the system cannot give information on any other problems.
  1. Press the diagnostic socket button for the third time to see if a third fault code is stored in the memory. If the diode light flashes the same code 1-1-1, there are no other codes in the memory.

jturcotte_2373.gif

Fig. Fig. 1: Push button once for mode 1
Push button twice for mode 2


Push button three times for mode 3




jturcotte_2375.gifjturcotte_2374.gif


To clear the codes:

  1. Turn the ignition switch to the ON position.
  2. Read fault codes.
  3. Press diagnostic socket button 1 time and hold for approximately 5 seconds. Release button. After 3 seconds the diode light should light up. While the light is still lit, press the button again and hold for approximately 5 seconds. After releasing the button, the diode light should go off.
  4. To ensure that the memory is erased, press the button 1 time, for 1 second but not more than 3 seconds. The diode light should flash code 1-1-1.
  5. Start and run engine. If engine will not start, correct the problem before proceeding and start over with Step 1.
  6. Check to see if new fault codes have been stored in the memory by pressing the diagnostic socket button 1 time, for 1 second but not more than 3 seconds.
  7. If fault code 1-1-1 flashes, it indicates that there are no additional fault codes stored in its memory.

Oct 05, 2011 | 1994 Volvo 850

1 Answer

What are the classification of simple machune


Hi,
Specifications Display Image Aspect Ratio: 16:9 Widescreen Modes: Conventional 4:3 Comb Filter: 3D digital Additional Features: V-Chip, parental control Diagonal Size: 42" - widescreen Display Format: 1080p (FullHD) Resolution: 1920 x 1080 V-Chip Control: Yes Image Contrast Ratio: 2500:1 Brightness: 500 cd/m2 TV Tuner Stereo Reception System: MTS Secondary Audio Program (SAP): Yes Analog TV Tuner: NTSC Video Features HDTV Ready: Yes Analog Video Input Signals: NTSC Input Video Formats: 1080p Remote Control Type: Remote control Audio System Sound Output Mode: Stereo Sound Effects: Virtual Dolby Digital Speakers Included: 2 speakers Additional Features: Mute button Speaker(s): 2 x right/left channel speaker - built-in Connections Connector Type: 1 x composite video input ( RCA phono ) ¦ 1 x S-Video input ( 4 pin mini-DIN ) ¦ 3 x audio line-in ( RCA phono x 2 ) ¦ 2 x component video input ( RCA phono x 3 ) ¦ 3 x HDMI input ( 19 pin HDMI Type A ) ¦ 1 x digital audio output (coaxial) ( RCA phono ) ¦ 1 x audio line-out ( RCA phono x 2 ) Power Power Device: Power supply - internal Power Consumption Operational: 240 Watt General Product Type: 42" LCD TV TV Tuner: 1x analog, 1x digital Width: 41.3 in Depth: 10.2 in Height: 29.7 in Weight: 55.1 lbs HDCP Compatible: Yes Digital Television Certification: HDTV Digital TV Tuner Digital TV Tuner: ATSC, QAM Additional Specifications HDMI: Y More Information Model No.: DP42848 Shipping Weight (in pounds): 67.0 Product in Inches (L x W x H): 41.3 x 10.2 x 29.7 Assembled in Country of Origin: USA and/or Imported Origin of Components: USA and/or Imported Walmart No.: 000503420

hope this will be helpfull to you.
GoodLuck

Feb 02, 2011 | Sanyo 42 in. LCD TV

1 Answer

My Pioneer VSX-517 receiver will not power up. Have checked power cord & fuse.


good start. the next is to chech standby voltage 5 volt, that goes to the microprocessor which will enable you to turn-on the main relay(12 volt)that powers up the whole unit. so if you cannot hear a click when you push the power button the the standby transformer capacitor and the 5 volt needs to verified. if this is good the relay - 12 volt and if this is also good the micro is bad. oops-hope it doesnt come to that. the micro is located on the circuit board mounted on the faceplat-a large many pins IC.

Feb 26, 2010 | Audio Players & Recorders

1 Answer

I turned on my playstation three, you can hear the audio but there is no picture. is this a known problem? is there a fix?


try video reset

when ps3 is in standby mode( red light) press and hold the power button till you hear a second beep


ps3 standby...press hold power............"beep"......."beep" ......release power button.

Sep 20, 2009 | Sony Playstation 3 (PS3) Console

1 Answer

Power wont come on and blue power button just blinks for a while


Do you hear a thumping coming from the speakers when the power switch is pressed? If so, you have a shorted video IC or your convergence ICs need replacing.

Aug 09, 2009 | JVC AV-56P575 56" Rear Projection...

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Wont turn on but when I click the power button three lights flicker three times.


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MA AUDIO HK4000D SUBS CUTTING IN AND OUT ???????


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Was there a change in symptom from original?? Then recheck
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