20 Most Recent JVC AV-27820 27" TV Questions & Answers

These flashes are fault indications, and are called blinking codes. You can get an idea about the faulty circuit stage inside the TV, from the number of flasher occur at one time switch ON. Count it carefully. If you wish to get more details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window. Blinking codes and details to many brand TVs are given in detail. If you're sound in electronics, surely the site will help you to rectify the fault to your TV.

All depend of the design of the TV and REm CONTROL. See you owner manual or download from www. retrevo.com God bless you

hit your TV on left side or right side or on top & then observe ..........you will get normal picture or it comes & again it goes....if it is happening like that then following is the situation..........after 4 or 5 yrs in some TVs on main board ( also on CRT circuit board ) at some soldering joints crack develops....then due to loose contact picture becomes small in size or abnormal width, or rolls etc ...........when we hit that lightly then those loose contacts joins temporarly & again picture appears normally for some time............so solution is .....TV main board & CRT circuit board should be observed carefully & most of the joints should be re-soldered.......only a good service engineer can do that........even after hitting TV lightly if there is no response then main board has to be checked completely........in your case iam sure it is loose connection problem.........joints should be re - soldered ...100% it works again ................this problem cannot be solved by user unless user has idea about components( resisitors, transisitors, diodes,...etc) , have soldering iron , multimeter & other tools....................so contact good TV service engineer .............iam from bangalore - 09986222774 - [email protected] ( computers, laptop, printers, etc ).

Sounds like vertical failure. Possible bad connection on the vertical output IC. If you have pretty good soldering skills and a soldering iron with solder you might could try it yourself.

A tv shop in my area would charge around 50.00 or so if its just a connection problem. I say connection because you mentioned hitting the tv to restore the picture.

If you want to try it yourself the connection problem most likely will be on the vertical output ic itself
Its a linear ic meaning straight thin with a one set of leads of 5-7 pins. It will be screwed to a heat sink (metal piece to disipate the heat). It will be soldered on the bottom of the board and most likely there will be cracks around at least one of the pins.. If your not good at soldering I wouldnt attempt the repair yourself..
Good luck!!!

Hello
There is power comming inside your TV and your TVs power reguator section is working fine. That is why at least you see the line you decribed here.
The problem is related to the Vertical Output section inside your TV. it can ba an Ic fault. In most modern telivisions Integrated Circuits [ICs] are used in this section. To replace it you should open the back cover of your tv.
Take every precautions as we take when working with an electrical equipment. Never allow children to be with you or allow them to come nearby. Let an adult nearby you as a precationary measure. Never use metal chairs or work with bare foot, do wear a rubber or plastic shoe while working. Plug out the TV each time before you touch any of the inner parts of it.
Open the back cover, and findout the Vertical Output Ic. It can be located at the main board itsef. Follow the wires from the deflection yoke [the coil fitted on neck of picture tube]. There will be four of them, out of two will be thicker than other two. Follow the two thinner wires. It will go to the vertical section, and near to its other end whcih goes to the printed circuit bard, you will notice an Ic screwed to a metal heatsink. Before going forward, as the Tv keep opened, plug it to power supply and turn it on. Never touch any parts while supply is in. Watch for some time and see whether the line comes of not. If it comes again, give a small hit with any non cuductive metereial, say a piece of dry wood or so, at the top of the vertical Ic. If the screen comes alive with that hit, you can be sure that your TVs vertical output Ics solderings are loose. Resoldering it will rectify the probelm.
If it doesnt help, resoldler it out from the board, go for an identical one both in type and number. Replace it will retify your problem. Ok
Wish you success.

Push the power button and hold. Check whether lights are ON.

If OK try whether you can keep the switch permanently in pushed
position. Try some paper stuffed tightly.

Otherwise replace the switch.

cold solder in vertical ic or bad.

This sounds like the text mode of closed caption but don't know why it would only be when playing dvd . Go into the setup menu of your dvd player and see if it has closed casption and if so turn it off. Hope this helps

i have the same exact problem what i figured out is that i cant watch cable on it but when i hook a vcr to it i can watch movies. but when i hook my dvd player to it the block comes back on. so i hooked my playstation 2 to my vcr and hooked my vcr to the tv and i can watch dvd's that way. thats all i have sorry..

It will still work fine if you have cable or satellite. If you are using an antenna to receive broadcast signal you will need to get a digital converter box from an electronics store like Best Buy. You can get discount coupons from the federal government good for 40 dollars towards the converter. Google "Digital Covnverter Coupon Program" and it should give you a link to the site to apply for up to 2 coupons.

Best wishes

One or more of the electrolytic condensers near the vertical ic are bad

shorted components causes continuous ticking/clicking sound from inside the set! it would really need a shop visit since you have no picture display! if you could trust the service person then it could be worth sending it to a shop!

Hi, You may also want to check the Vertical IC. In some units I've worked on, failure or cold solder in the vertical IC triggers protection. Good luck and cheers.

Im sorry your having this trouble But I cant tell you whats wrong as I havent looked at the set. The problem could be a simple power supply problem or a cold solder connections in the horizontal sweep circuit. If your not a tech this is not a job for an experimenter or tinker . There is hi voltage in these sets even when they are unplugged so you are gonna need to call a pro in to assit you in this repair or geta new one > good Luck

probably some cold solder joints. take your time and check over whole circuit board and re-solder what looks bad.

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CHUNGHOP Universal Remote Control Codes

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try unplugging the unit. Press and hold power button for 10-20 sec's then try again

Question edited for clarity. If is is the outer clear screen, replace it with a a sheet of Lexan Polycarbonate sheet cut to size. Lexan is bulletproof. https://www.google.com/search?q=clear+polycarbonate+sheet+cut+to+size Sears list it but no longer available. After all Rear Projection Televisions are antique dinosaurs. Technology has moved on :>D https://www.searspartsdirect.com/model/33xrqyx4kj-001758/jvc-av-56wp74-television-parts https://www.google.com/search?q=jvc+i+art+pro+av56wp74+parts Service Manual https://www.manualslib.com/manual/2744485/Jvc-Av-56wp74.html#manual ..