Sharp aquos lc37hv4u tv stays in standby mode, will not turn on

try reflash the firmware. if that's not help, probably the Back light burnt , replaces it

How to fix lcd lines on Sharp tv screen, hdmi video board ...

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https://www.youtube.com/watch?v=cHki4D0EwOo
May 24, 2014 - Uploaded by Tampatec
How to fix LCD lines on Sharp TV screen, hdmi video board easy ... Make Money From Your Broken Cracked LCD LED PLASMATV ... TV Repair Help for Vertical & Horizontal Lines on Your TV Screen ... Sharp Aquos LC-32 37 46 52DH65E 66E 77E - NoPic/Sound with ... Get video URL at current time.

comments on LCD Display Symptoms and causes. - YouTube

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We have frequent outages causing the TV to turn on from standby mode when power returns. (These ..... Sharp LC-70LE650U 70-Inch Aquos TV TURNS ON WITH PERFECT PICTURE AND ..... It has thin horizontal lines on the top quarter of thescreen. ..... hey there, bought a 52lg60-ua had no image/picture but had sound.

LCD Display Symptoms and causes. - YouTube

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AQUOS LC37HV4U 37 inch Multimedia LCD Television Overview CNET Try this link to get the update soft:
http://electronicshelponline.blogspot.com/

Hello
Three digit universal remote codes for Sharp tV are:
004/ 009/ 079/ 095/ 111/ 112/ 114/ 122/ 123/ 124/ 173
Four digit codes are:
0079 0123 0063 0020 0004 0009 0226 0266 0006 0095 0122
Direct Code Entry

1. Press and hold the SETUP button until the red indicator stays on, then release the SETUP button.
2. Press and release the desired Mode button (TV, VCR, etc.). The red indicator blinks, then stays lit.
3. Enter the 4 digit code from the code tables. Note: after a valid code entry, the red indicator turns off. For an invalid code, the red indicator flashes.
4. With your device on, press CHANNEL UP. If the device responds, no further programming is required. Note: If some buttons do not operate your device, try one of the other codes for your brand.

my tv stays on standby

Call Sharp for warrenty repair.This problem very common in Sharp tv.Picture will come on turn power on/off button few times will work.But still under Wareenty call to Sharp to replaced the main Tuner Signal board.

Call up Sharp, if you are part of the AQUOS Advantage Program, you get FREE in home service along with the repairs for it.

They'll give you a case number, set you up with a technician and BAM!
I called on a Wednesday and got an appt for that Saturday for the technician to come to my house.

I doubted Sharp alot less after that.

yes my 26" sharp aquous LCD does the same thing, turns itself off and on at random times without explanation. I sent to authorized service center they replaced the power supply under warranty then it failed within 6 months and neither the repair center nor sharp will do anything about it other than sell me a new powersupply for $425.00. I have contacted a power supply repair center in Texas who has vowed to fix it once and for all. We'll see in the next week if they fix it or not.

I have a fully functioning lc37hv4u box & cable that I will sell for 200$ my lcd got cracked. let me know [email protected]

Yes it is a temp problem as you found out for your self Great call on that BUD.. the best thing to do is contact sharp to see if they have had simular problems and if there are any recalls on this model . If not they will instruct you where to send the monitor into to be fixed.