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Magnavox 42MF439B Support Question

Magnavox 42MF439B Support Question

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Question posted by kirksanders10 on February 20th, 2012

Wats Wrong?

when i plug my tv up it automatically comes on then goes to a black screen then the screen goes white then red then green then blue just does it over and over cant change the channel or nothing i have to unplug it to turn it off.

Current Answers

Answer #1: Posted by UsPinay on February 20th, 2012 8:42 PM
This answer was accepted by the poster of the original question.
UsPinay

Member since:
January 23rd, 2012

Points: 183,330
1,100
points
Sounds like you have cold solder joints, or solder joints on the mainboard which have cracked over time due to thermal expansion and contraction of the circuit board.

Repair is to find and reflow  the cracked joints.  To request  service  or repair  on your TV still in warranty  (products purchased after 2008) contact their Customer Care.  If you contact them you should have the following :
  • The exact model number
  • The date of purchasing
  • The serial number of your product

Speak with a Magnavox Representative :

LCD TV                                              : 1-866-341-3738 *

DVD Player/Recorder  and Blu-ray Player: 1-800-605-8610 **

All other products                                :  1-800-705-2000*                   

Hours of Operation :

*Monday – Saturday -  8:00 am - 11 pm EST

                Sunday    -  9:00 am - 6 pm EST

                                Excluding major holidays

 ** Monday – Sunday -  6 am – 9 pm PST

                                Excluding major holidays

Products  purchased prior to 2008  please  go directly  to reputable repair professional to deal with getting your set back into normal operating condition.

In the meantime, stop using that TV in its current condition! Continued use in that state could make the problem worse or create new headaches that may only allow for a more expensive repair bill.

 


Posted by USPinay

Related Magnavox 42MF439B Manual Pages

User Manual - Page 3

... to proper grounding of the mast and supporting structure, grounding of the lead-in performance; All televisions must comply with + and - Read these instructions. 3. When a cart is not used ,... electrode. The power supply cord or the plug has been damaged; C. The appliance does not appear to operate normally or exhibits a marked change in wire to an antenna discharge unit, ...
User Manual - Page 4

...digital apparatus complies with the same or equivalent type. Like all LCD products, this unit cabinet. LOCATION AND HANDLING • The...to radio or television reception, which the receiver is connected. 4) Consult the dealer or an experienced radio/TV technician for a... plug. • Do not put your fingers or objects into an outlet on the AC power cord when disconnecting it . Changes ...
User Manual - Page 5

... Laboratories. At least two people are required at this step. 3 Drive Phillips pan screws in this Manual The following is applicable to damage the screen. INTRODUCTION PREPARATION WATCHING TV OPTIONAL SETTING TROUBLESHOOTING INFORMATION 5 Trademark Information • HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI...
User Manual - Page 6

... Decoder - This feature will turn off automatically. • Sleep Timer - You can be construed as your room and sets the sound as granting, by implication or otherwise, any purpose without notice. Provides free and easy channel selection and lets you can be played back on the TV screen. • Autoprogram - Built-in this document...
User Manual - Page 7

... connection from HDMI device. 7 EN INTRODUCTION PREPARATION WATCHING TV OPTIONAL SETTING TROUBLESHOOTING INFORMATION audio input jack for VIDEO 2 (p. 11) S-video, RCA video, RCA audio cable connection from HDMI device. [Rear Panel] 11. When you connect your PC that has a DVI terminal, use a stereo mini plug-RCA conversion cable as well. (For HDMI 1 input...
User Manual - Page 8

... possible battery leakage. • Do not try to turn the unit on and off . 2. FORMAT (p. 18) Press to be used for the TV screen. 12. SLEEP (p. 15) Press to select channels and the external input modes. CH + / - (p. 15 / p. 16) Press to activate the sleep timer. 15. SOURCE (p. 16) Press to access connected external...
User Manual - Page 9

... to this unit, please unplug the RF coaxial cable from the antenna input jack before plugging in the AC power cord. 5 Antenna Connection Connect the RF coaxial cable on your reception...channels in your safety and to avoid damage to the HDMI or the component video output jack of the cable receiver / satellite box. or (green) (blue) (red) side or rear of this unit RF coaxial cable or cable TV...
User Manual - Page 11

...L Note: • This unit accepts 480i / 480p / 720p / 1080i video signals. (green) (blue) (red) rear of this unit RCA audio cable [S-video or Video Connection] S-video connection offers good ...video input jack, connect RCA audio cables to the unit. INTRODUCTION PREPARATION WATCHING TV OPTIONAL SETTING TROUBLESHOOTING INFORMATION No supplied cables are used in this connection: Please ...
User Manual - Page 14

...-screen language from the antenna terminal and no operation for CATV channels, then press [OK]. Refer to "Add Channels" on page 20. • If you want to change to another language, refer to "Language Selection" on page 21. • If you want to scan the channels automatically again, refer to "Autoprogram" on the back panel of the TV...
User Manual - Page 19

...page 23.) SETUP • You can automatically scan the viewable channels. (Refer to "Autoprogram" on page 19.) • You can skip the undesired channels when selecting the channels using [CH + / -] on ...to "Add Channels" on page 20.) FEATURES • You can change the display format for closed caption, which displays the dialogue of a TV program or other information across the TV screen. (Refer...
User Manual - Page 20

... the "DTV" indicated on the TV screen. • By using [CH + / -], you must perform Autoprogram function. OPTIONAL SETTING 5 Channel List The channels selected here can be able to select the channel again using [CH + / -]. • To reactivate a removed channel, use [Cursor K/L] and press [OK]. For digital channels, you can select the memorized channels only. 20 EN Note: •...
User Manual - Page 26

... Opacity Edge Color Edge Type Closed Cap ion White Black Red Green Blue Yellow Magenta Cyan Edge Type Edge type of the displayed caption can be switched as below. To clear the box, select "CC-1", "CC-2", "CC-3", "CC-4" or "Off". • If the unit receives poor quality television signals, the captions may be used in order...
User Manual - Page 27

...Channel Lock A SOUND US Movie ratings lock B SETUP US TV ratings lock C FEATURES Canadian English Rating LANGUAGE Canadian French Rating USB Region ratings lock Change PIN D A... will be blocked automatically... "Child Lock", then press [OK]. With this TV are based on CEA-766-A and the Canadian Radio-Television and Telecommunications Commission (CRTC) policy. • When...
User Manual - Page 35

... the unit for the first time or move it changes automatically. Answer • Check the antenna or cable connection to ''Child Lock" on the unit. • Many digital channels have alternate channel numbers. These are the numbers used to insure that the Green (Y), Blue (Pb/Cb) and Red (Pr/Cr) connectors are connected to their corresponding colored...
User Manual - Page 37

... watching TV or using the unit as a PC monitor, make sure that "Horizontal Position" and "Vertical Position" in specific modes, but this manual for caption. This is manufactured to switch various screen modes. The display image does not cover the entire screen. • If you are displayed as a fixed point of blue, green or red. Read...
User Manual - Page 38

... (y) independently of each of 3 principal colors of light (red, blue and green) through the camera, the remote control is used as its height. NTSC Acronym that stands for National Television Systems Committee and the name of the current analog broadcasting standards. Conventional TVs are 16:9 (the TV screen is a video signal format that conveys each other through...
User Manual - Page 39

...chart of common cable channel designations. INTRODUCTION PREPARATION WATCHING TV OPTIONAL SETTING TROUBLESHOOTING INFORMATION 5 Cable Channel Designations If you subscribe to cable TV, the channels are subject to 104°F (40°C) Power requirements: 120V~ AC +/- 10%, 60Hz +/- 0.5% Power consumption (maximum): 262W LCD: 42 inches full HD panel Dimensions: W: 40.4 inches (1,026mm...
Product Spec Sheet - Page 1

42MF439B 42" class LCD HDTV with Digital Tuner With its ultra sharp widescreen Full HD picture, rich color, HD media connectivity, Dolby Digital sound, integrated digital tuner and multiple AV input options, the 42MF439B is a superb TV for your home. •LCD Full HD display, 1920x1080p •Dynamic Contrast gives enriched color performance •Integrated tuner decodes...
Product Spec Sheet - Page 2

...www.magnavox.com 42MF439B/F7 42" class LCD HDTV with stand in inch (W x H x...; Diagonal screen size: 42 inch / 106 cm • Visible screen diagonal (inch): 42.02 inch • Panel resolution: 1920x1080p... of Installation: Autostore, PLL Digital Tuning, Plug & Play • User convenience: Sleep... deep blacks and...channel audio standards, make use your TV as Full HD. This is ...
Product Spec Sheet - Page 3

... issue 2010-02-16 Version: 3.4.3 12 NC: 8670 000 53002 UPC: 6 09585 16400 0 Specifications are the property of Koninklijke Philips Electronics N.V. www.magnavox.com 42MF439B/F7 42" class LCD HDTV with Digital Tuner Product specifications (continued) • Product weight (lb): 53.0 • Product weight (+stand) (lb): 55.2 lb • Weight incl. or their...

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