Introduction How to Fix a TV That Won't Turn OnModern flat screen TV's have a known problem with capacitors going bad. If your LCD or LED TV won't turn on, or makes repeated clicking sounds, there is a very good chance that you can save hundreds of dollars doing this simple repair know, I know. You're thinking, "Tinker inside my LCD HDTV. Are you crazy?" No, I'm not crazy. This is a repair almost anyone can do and this fix will work for any 1 You sit down and get comfortable, ready to watch your favorite TV show or movie. You turn on your TV and...nothing! Unsure if you hit the power button, you try again...again, nothing! But you do notice a clicking sound emanating from your TV. "What the heck? No...Oh, crap!" HDTV's aren't cheap. Most of us have to save, or at least be prepared to spend $800-$1000 on new one. Heck, I'm sure many of you don't savor the idea of spending a few hundred on repairs. I have good news. This repair is actually quite simple, and with only a few basic tools and about 20 bucks, you can have your TV working in less than an step-by-step repair below was done on my Samsung LN46A550 46" LCD HDTV, but this is an easy repair on any bad News. If your TV is physically damaged in any way, been dropped, has a broken screen or gotten wet then this repair isn't for you. But if your TV was working one day but not the next, read 2 Tools NeededYou will need 5 basic items below for this repairSoldering Iron & solder Phillips Screwdriver Pliers Wire Cutters Replacement Capacitors from AmazonIf you need a soldering iron, that no problem. They are cheap and easy to use. I highly recommend this 60 Watts Soldering Iron Kit. It's less than 20 bucks. If your looking for the lowest price possible, this 60W soldering iron with stand is about $8 shipped prime and will work fine. Step 3 Optional ToolsThese tools aren't required, but they can make the process easier. Magnetic, ratcheting, flexible screwdriver to help remove all the casing screws Cordless Screwdriver to help remove all the casing screws Desoldering wick absorbs melted solder Solder sucker remove melted solder Flux Pen flux on solder makes it flow and less "sticky" Multi-Meter test for bad Caps, helpful if there are no visual cluesStep 4 Remove Stand and Wall MountAfter unplugging everything on the TV, you will need to remove the stand. If your TV was wall mounted you will need to remove the TV from the wall, and remove the mounting bracket from the back of the arrows Remove these screws to remove stand from arrows Remove these 4 screws to remove a wall mount not shown from your TV sits on top and inside the stand, so it wont just flop over when you remove the stand screws, but it's always safer to have a friend hold the TV upright as you remove the screws from the stand. Then each of you grab a side and carefully lay it flat on a carpeted 5 WarningWhen handling your TV always keep it straight up like your watching it or laid flat. Any force applied at odd angles can damage the fragile glass 6 Remove All Screws That Attached the Back Casing of the TVAbove is a a picture of the back side of a typical TV. The left picture is my LG 42LN5300 and the right picture is my Samsung LN46A550, but all TVs are similar. Remove all of the screws along the outer edge of the back casing. There can be anywhere from 10 - 16 of these will also be screws within any area where the are power or cord plugins. You can see these in the lower middle of the pictures. highlighted with the red rectangle on my SamsungStep 7 Don't Forget the Hard to Find ScrewsOften in the area where you plug in cords a screw or two can be found. remove these as 8 TV With Back Casing RemovedWith the back casing of your TV removed take a picture of your TV. This will help during identify the "power board". Every TV is a little different, but the power board will have can shaped capacitors and is the board that the main power from the plug goes to first. On this Samsung TV I put a green rectangle around the power board that we will be working on..Note The other "green" board is the "logic board", this is the computer that runs the TV. Repair of the board is beyond the scope of this article. But it's most likely not the problemStep 9 Remove Wiring Harnesses From Circuit BoardRemove all of the wiring harnesses from the circuit board. A simple tug on the connector clip not the wiring should be sufficient to remove them. On this particular Samsung board there are 7 different 10 Remove Screws Holding Down Circuit BoardRemove the screws holding the power board to the TV chassis. Most boards will have 6 screws holding them down, as does the one shown in the picture. But look it over there could be more or is a power supply board and not particularly sensitive, but it is always a good habit to handle these boards carefully and by the 11 Identifying Bad CapacitorsThis TV repair focuses on the small "can shaped" Aluminum ElectrolyticCapacitors. These capacitors come in many colors and sizes but are easy to find on any power board. Not only are these the most likely cause of your problem, but bad ones are simple to find and simple to replace. In most instances you will be able to visually identify the bad capacitors. You don't need any special skills in electronics or 12 Visible Failure 1 - Bulging VentsWhen a Capacitor fails, the chemical reaction inside the capacitor can produce hydrogen gas, so capacitors have vents cut into the tops of their aluminum cans. These are intended to break and release the gas that has built up inside the capacitor. So, a capacitor which has failed can show bulging at the top..Step 13 Visible Failure 2 - LeakingAnother sign of a failed capacitor is leaking fluid electrolyte. This can be an orange or brownish discharge from either the top or bottom of the capacitor. Usually, with leaking the capacitor will also be bulging. But a capacitor can bulge but not do not always show visible signs of failure. But, if you see either of the 2 signs above on your board, you can be confident that you're close to fixing your TV. If you don't see these signs of failure, but your TV had the tell-tail clicking sound, you still can be fairly certain the steps below will fix your 14 Find the Bad Capacitors on Your BoardOn power board pictured above, I have indicated which capacitors you should be examining for signs of failure. These Capacitors are Aluminum Electrolytic Capacitors, and are the most likely cause of your problem. The capacitors with the green arrows are the most likely candidates for being bad, but the blue arrow are other capacitors to worry if your board looks a little different. Simply examine all of the capacitors and usually the faulty ones stand Do not bother with the large capacitors 2 or 3 will be on every board. These are high voltage, rarely fail and for safety require a little more expertise to work board probably looks different, that's OK, just examine any and all capacitors on your board that look similar to ones pointed out The pictures above are actual closeups of my TV's board. Notice how the blue capacitors in the foreground are bulging. These are the capacitors I will replace. All other capacitors look OK. If you can find replacements for all 4 of these capacitors, and any others that show visual signs of going bad, I recommend replacing them all while your in here..Step 15 Removing the CapacitorsCapacitors have polarity. What this means is, like a battery, they have a positive + and a negative - side. Before removing any capacitor, note which side the white stripe of the capacitor is facing. You will need to put in the new capacitor in the same direction. You probably noted on my pictures that I actually made a note on the aluminum heat sink with a 16 Let the Iron Do the Work. If the Capacitor Does Not Easily Pull Out, Do Not Force that you've identified the capacitors that look bad, turn the board over and carefully identify exactly which points on the board are the wire leads from the these them with a "sharpie" type pen to keep track. Grab your friend and have them help you on this next step. Balancing the circuit board on its side while using a hot soldering iron and pliers can be a bit tricky. Plug in the soldering iron and give it 10 minutes to get hot. With the circuit board on its edge, have your friend grab one of the capacitors with the pliers and apply a very gentle pulling pressure. Apply the tip of the soldering iron to one lead on the back side of the board and hold it there until you see the solder melt. Now switch to the other lead until it melts. Keep going back and forth on the leads. Each time the solder will melt faster. After going back and forth a couple times the capacitor will easily come out. Repeat for each capacitor that you are replacingStep 17 Time to Go ShoppingCapacitors are rated for their application and you must replace like for like. There are 3 ratings to identifyuF micro farads Temperature VoltageuF micro faradsIdeally you should match the uF and the temperature rating exactly. But it is acceptable to use a capacitor rated higher uF if it is within 20% of the Try to match the temperature rating, you can go higher, but not if Possible. You can use a larger value if needed. Not you can find replacements capacitors at your local electronic store. But it may be easier to buy replacements from my repair I needed;1000uf 10v Capacitor 105c High Temp, Radial Leads820uf 25v Capacitor 105c High Temp, Radial 18 Install New CapacitorInsert capacitor, making sure to place the negative side in the correct location. Look at your notes and pictures to make sure you are correct If there is hard solder in the hole, simply apply the soldering iron until solder melts and slip capacitor leads 19 Bend Back the Leads to Hold the Capacitor in 20 Carefully Clip the Leads So That Only About 1/8" Is 21 Solder LeadsPlace your soldering iron and solder on lead until the heat melts the solder. Once solder melts onto the lead, apply the iron on the lead and solder a few times to melt the solder cleanly on the lead. If you have solder flux, the solder will make a clean 22 FinishedCapacitors installed! If there is any flux or solder residue, simply clean the area with a damp 23 Reverse the ProcessAttached the circuit board with the six screws. Reattach all seven wiring harnesses. Replace the back cover. Turn on TV and be happy that you save yourself a ton of fix works and it worked for me.
PERBAIKANTV POLYTRON 123 STANBY Semalam di mintain tolong tetangga, biasa tv nya nggak mau hidup, begitu saya cek ternyata stanby led hidup merah . saya coba pencet tombol Chanal + - tidak mau hidup juga. akhirnya bongkar deh tv nya, biasa tindakan awal solder ulang semua jalur yang kendor, setelah selesai solder eee ternyata masih sama.
Ketikaelektron tersebut mengenai phosphor, hal ini akan menyebabkan layar monitor TV Anda akan menyala. Warna yang dihasilkan pada layar sebenarnya merupakan perpaduan antara tiga warna dasar: merah, hijau, dan biru (RGB). Konsumsi listrik pada tv tabung sekitar lebih dari 75 watt, menyebabkan tv tabung lebih boros dibanding tv led yang hanya
Semuakode ini juga bisa kamu pakai untuk tv konka tabung ukuran 16 inch sampai 21 inch. 101: 102: 107: 200: 2. Kode TV Konka LED maka tidak perlu khawatir karena dibawah ini saya akan menjelasakan caranya secara detail. Langkah pertama tekan dan tahan tombol Power dan Set. Kemudian tunggu hingga lampu indikator menyala, jika sudah lepaskan
MENGANALISAKERUSAKAN KOMPONEN PADA TV TABUNG YANG MATI TOTAL . TV tidak mau start, Tegangan 300V dan 115V normal, FBT nyala hanya sebentar,Teg 12V ke IC Oscilator.Hor normal Ganti C76 =180N regulator - Tv bisa menyala sebentar terus ke posisi Standby, cek semua elco tegangan drive, oscilator horizontal - Gambar bergeser, tidak bisa
Masuklagi garapan tv tabung merk lg dengan kerusakan mati total. Kerusakan tv mati total biasanya dapat diketahui dengan tidak menyala n Read More . Menurut yang punya blender,blendernya pas mau di Read More . Cara Memperbaiki Mesin Cuci Yang Bocor - Mesin Cuci Polytron 2 Tabung
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tv tabung tidak mau menyala
