I've watched almost all of you videos and just want to express my appreciation. I can't imagine what possesses you to take the time to do it but I'm very grateful. With a couple of exceptions, other "repair" videos are just kitchen table attempts with no real knowledge of what they're doing. As a fairly experienced amateur tech involved primarily with audio amps, your clear explanations of tv repair is a real pleasure to watch. I've learned a great deal. Thank you.
Thank you so much for this video! Just replaced the four Zeneca diodes and the picture is now back. You saved my tv from the landfill and 100s on buying a new tv
very good video. I knew the issue was the Y main board but instead of buying a whole board, your video allowed me to quickly test these and I had the exact same issue which I could quickly fix. The 36v reverse bias measurement of the zener allowed me to blindly by the diodes for 1€ total! saved lots of time and so seems that this is a weakness of these models. Now why this happened, I should probably find the board schematic to find out the root cause of this problem!
btw, you helped me with a previous repair on another samsung I have, your video for "Samsung DLP White Spot Dot Repair" was perfect and using your video I was able to get the job done...hoping you can help me with my no sound issue on my Samsung plasma S5053...Thanks!
Wow. Love that you repaired the board, Most of the time those IPM's go but you did really well! Only suggestion i have is that i would not use one of the AV jacks as a ground reference for measurements, Id personally avoid using anything measurement wise that goes through the main board grounding system due to low voltage components that the meter ground have to travel through to get to the actual ground the power supply provides. I recommend far more to use the PDP panel ground as a reference. Since the main ultimately grounds itself to the frame anyways, that is the preferable place as a central for everything.
Wow good observation, the diode is for reverse polarity protection of the power supply. The resistor is for charging batteries at high currents, it makes it easier to adjust the current, I set the current to a trip level of 1 Amp then set the actual output level just below that and when the battery reaches the 100 % level the current climbs to the trip level and the supply voltage it cut off. That way I can charge the cordless drill I use as a screwdriver from 0 % to full in just over an hour.
This video will help me with a Samsung plasma I've been trying to repair..I've pretty much concluded the panel is shorted but ill troubleshoot it again
Thanks for the vid! I replaced the zeners and I see a good picture. So far so good. But currently the Vs is 207 volts, instead of the 198 it indicated on the plasma screen and I cannot get it lower. What could be the cause?
First off great videos! I had question maybe you could point me in the right direction. Samsung 42" plasma had bad fets on x main. Replaced fets and driver ic. Tv ran for an hour, noticed a smell, tv shut down, bad fets and burn resistor after driver ic before fets
Have been following you for some time and love your videos. I am new to plasma TV repair and have approached a road block. I have a Samsung HP-R5052X plasma with no picture and great sound. I had confirmed that the x board had a blown fuse and also confirmed a dead short. I have replaced it but still have the same problem. Y board had major buzzing and replaced that also. Still no picture. I checked the y buffer boards and all seem to be ok. I am assuming my problem now is with the main logic board. Is there a way of checking this board to confirm one is needed and if so how? Whatever help you could give me would be appreciated. Regards Jim
Was wondering if replacing the diodes is a way to save replacing the entire Y main board? I have a Dell W4201 CHD made by Samsung with what I suspect bad Main and buffer boards.
My power supply's a lil different. The Y and X boards connect directly to the power supply. The Y board has 2 VA's, but one has a black wire. The same goes for X board having 2 VS's and one has a black wire. Should I test the black wire's pin?
Wondering if you can help me out, as I'm a little stumped. I have a hp-t6044 powers on but with no video (sound works though). I had 2 bulged caps on the Y-main, and replaced them. I see no other damage, and have checked for shorts between the y-main and buffers (no shorts) my VS is reading 458v (should be 207v) and VA is 140v (should be 63v). I'm not sure where to go from here. Thank you for your time.
norcal715, I have this same HPS5053 and the power comes on (blue LED is steady) and there is no picture on the screen. However, when I measure the VS and VA on the power board they are both at 0V. I measured them the same you as displayed in the video at 0:42 - 1:42. How can I determine if the power supply board is bad or other components within the system? Thanks for your assistance.
WOW! You are the Man for sure. I have a PanasonicTC-P54G10 July 2009 that shows great picture on top part of the screen all the way across from left to right but only approx. 6 inches down from the top towards the bottom of the screen. I was told by a TV repairman that I needed a Main Control Board and it would be more expensive to repair it than going and buying another. Do you have any recommendations. Thanks a million. PS Maybe I could help you with Airconditioning or music if you need for these I know. Thanks again & Hope to hear from you.
Thanks Jim. The fours diode burn pretty bad to the board. I figure it is not repairable. I ordered a used board, and I noticed that the used PCB only use 2 zener diodes instead of 4. Someone connect the diodes in series by solder only the first anode and the last cathode together with two diode. I looked at my old board and see that the first and the last can be use to solder. I will try to repair it again. I wonder if I only use 2 diode connect in series, what diode would I use 72V, 72V?.
hi I have a S50HW-YB03 it powers on pops loud through speakers then turns off no picture as well sometimes it power cycles and shows video 2 on screen them powers off any ideas? I checked power all looks good no visible bd caps logic apperal to work properly the x sustain is brand new.
you are the berries $2.95 for 25 diodes had my doubts but the diodes checked bad put them in and works like new you do rock do you accept donations for your efforts
I have identical TV and problem. Troubleshot EXACTLY like you did, got al the same results. Vs and Va voltage were fine. Checked Y-sus and had low resistance at exact same points. Disconnected y-buffers and got SAME values as you. I didn't want to un-solder diodes, so ordered y-buffers and y-sustain. I put then in, and still not fixed. Troubleshot exact same way again with the new parts, and got the EXACT same results as old parts and your video. What now? Is it possible the y-sus board they sent was bad? Funny though, no signs of heat on either board and get EXACT same readings, no matter which parts are in there.... Any help would be great...
Hi, thanks for the great videos, one question, what's the diode and the resistor you have connected on the BK Precision power supply and what's the function? Thanks in advance.
Great video.. I have a Samsung pn60e550.... any thought on my ps cycling on and off. All my supply voltages are present and good.. u think the logic or main board bad?
Hey i got the same Samsung 50" MN:HP-S5053 and its running that same problem. Though i thought it was one of the cords missing. Looking at yours it shows the same for me. So my Plasma tv's problem is basically the samething. Turn it on. 3 light blinks and a click. But no image. Would that be any of the eight diodes?
Great Video! It has helped me narrow this problem quickly; however, I am having trouble finding the shorted Zener Diodes. Are you able to post the part # and where you bought it? I have been unsuccessful. Thanks for keeping this one out of the landfill.
Hi excellent videos I have 2 questions i hope you answer me I have a plasma tv sasung s50fh-yb06 has sound but no image check the voltages when turning on the VS-208 volts instantly low to 35 volts and the VA-59 instantly drops to 3.5 volts ) Next question I have a samsung plasma tv when I turn on the tv burning fuse and the thermistor sck206 thank you sir
Have the same problem on my Samsung, troubleshot it (by using your video) to the same 4 diodes. Bought the diodes and a soldering repair kit... Haven't soldered since high school electronics class (circa 1995). I'm having a hard time getting the diodes surfaced soldered in there, can you help me? Tricks of the trade, maybe... Thanks
Hi .I have a plasma Philips TV 50pf9431d/37 .after replacing the 4 zenith diodes I still got no . .va/vscan/v set .vs/va . voltages ..that means the power supply still not working ? thanks for your advice
My samsung hp s5053. Has the same problem with the 4 diodes being bad. I purchased new ones from radio shack but there black and silver zener diodes and not copper color. Is this going to be a problem or will they work. Thanks rob.
Hi, My Samsung also has no picture with sound. If the VA, VS, VE voltages are correct on the PSU would this mean the PSU is ok? The X and Y seem fine but not 100% sure The heat sinks on the X board remain cold while only one heat sink on the Y board gets warm.
I have the same TV or plasma. I turn it on and just hear a clicking sound from the back top board. If I can't fix it I'll scap it for the gold silver copper . If you have any suggestions for me on how to d fix it I'd rather so the if it's something that an average Joe like me can fix. Thanks.
I have a JVC 42 in plasma that the screen goes dark after about 30 min. I don't know where to start troubleshooting it. You can still hear the sound clearly, but the picture is blacked out, wondering if you could help me try and figure out a place to start troubleshooting... James
I have the exact same problem: ZD5018, 19, 21, 22 burned. After replacement as instructed with your video, it still will not show picture. The Vscan (-190V) will come alive and then shutdown in about a second. It's the same even with the Upper and Lower Y-buffer board disconnected from the Y-Main board. If the ribbon cable at Y-main board is disconnected, Vscan is healthy -190. I can draw a few mA from Vscan with a small load resistor to verify the power supply. Any hints?
Hello I have a Sanyo 50" Plasma DP 50747-00 the power suply went out and i replaced it but now the TV has no color everything else works fine just no color thank u for ur time.
my board has two mounting screws that burnt up the board, replacing with a new board, but the screws mount to the metal in the tv, is there something i can do to clean these receiving holes for the new board and new screws to prevent corrosion or shorting out again?
Try using some sandpaper to sand down the surface until its bare shining metal. You may have to use a slightly oversize screw to grab with metal if the thread was damaged. Make sure the screw you use is not too long so it does not damage the back of the plasma glass
Can you tell me the part number of the Zener diodes, also what is the best way to get the dust out of the tv. I have a samsung ps-50c7hdx/xeu absolutely full of dust and some dodgy solder connections, obviously the guy who attempted to repair this tv did not watch any of your videos and should have the plug cut off his iron.
Omg it just shows how little we read, I was asking for the part number of the Zener diodes and Steve has already kindly stated the numbers in a previous comment lol, still want to know the best way to get the dust out of a tv without getting the garden blower on it lol
Hi, Top part is showing 1.5 Omh and bottom shows 10 Omh, but diodes on the top shows .3 each but ones on the bottom show nothing. I also took out two slightly bolged capacitors from power board charge them with multi meter but it only shows 300v where it suppose to be 450v.
As far as diagnosing Plasma TV problem is there a difference between the model your testing and HPT5054X/XAA the model I have, I'm experiencing picture blackout on all inputs, HDMI1, HDMI2, HDMI3, VGA, COMP, RF but audio works on any
Excellent video once again. 10000000000 thumbs up! I can see three thumbs down also. Why they are? I could not figure out! This is something happening with my videos also. But good thing is not to taken care as terrorists are everywhere. Regards,
I have the same problem except all four diodes were burnt out. I ordered a replacement and im still getting the same problem. No display. Could it be that i need to replace the buffer board as well?
hola me podrias ayudar soy de Zacatecas tengo una plasma higualita a la q rreparas samsung 50 pulgadas una de las tarjeta s de donde se conectan los LED se poncho uno de los sircuitos integrsdos y no prende la tele umo de los cuadritos no sirbe y no lo e conseguido me lo podtias bender o conseguir
i have a samsung PS-42Q7H PLASMA THE BLUE LIGHT FLASHES BLUE THE WHOLE TIME WONT SWITCH ON HAS A CLICKING SOUND ON THE RELAY THERE IS ONLY 5 VOLT STANDBY AND NO OTHER VOLST COMING OUT OF THE POWER SUPPLY WWHAT CAN I DO WITH THE 5 VOLT TO SEE IF THE POWER SUPPLY IS WORKING DANIEL FROM SOUTH AFRICA
I am trying to disconnect a y-main board from the y-buffer, on a PN60E550D1F to send it off for repairs. There are 6 white connectors between the two boards. ALL of the tutorials show how to disconnect the ribbon connectors, which is easy, but don't show how to disconnect the six connectors and just say "now remove the board". These are offering quite a bit of resistance and I am hesitant to just pull these apart for fear of breaking them. I can't do them one at a time because they are all in a row. Help please...thx.
You did an excellent job in this video, but i am confused on how to find the value on the zener diodes. If you( or anyone) can explain this in fufll, that would be great!
Can you please help me i have a Toshiba plasma 50 inch which powers on, displays menus and changes inputs correctly but has no video only sound , the screen is grey, , the menus are shown correcty but no video , thanks for helping
I have the exact same problem, four of zener Diodes are completely burn out. I removed the diodes, but I don't see holes to place diodes so I can do the soldering. I hope you or someone who watch this video can help me here. Before I watched this video I don't know what a zerner diodes are. Sorry for the dump question.
can you assist with my Samsung S5053? No sound., for years when you turned on the tv, about 50% of the time, there would no sound, turn it off and the on and the sound would kick in
As I recall at one time there was a bulletin for no sound that had me replace the actual audio output IC to remedy the problem, not sure if it is on your particular model though.
Very informative videos Do you mind to post or upload a video tutorial on LCD LED circuit explanation if you know the one let me know on the net Thank you Very much I watch most of your videos Good luck
Hi i have the 50 inch with these boards and am having the same problem. What Site can i purchase these from?I Have been searching and searching please help me.
Hi nice video, please help me I got a problem with the same board the tv just clicks and goes of After I turn it on , where do you think that I should look to find the problem and fix it ? Thanks in advance.
man my sammy just crapped out on me last night.....guess I will be testing some stuff out. picture went dark but stayed powered on and then flickered off. Went to power it off and noticed a faint burn smell from the far right side of the screen when facing.....bummer
when I tried to power it back on after letting it chill for awhile the eye just blinks repeatedly and then powers back off....any idea what to start with? Ic's maybe?
I've got an issue with my samsung plazma pn43d450a2dxza. It turns on, no clicking, but I only get audio. No backlight, image nothing. Just audio. Where should I start looking for the problem?
Hello there, I am wondering if you can help me. this one have got me, wondering what is wrong. I have a Samsung plasma PS51D550C1MXXY. At the start I had a problem with the X-sus board I replaced it, then there was no power ( no Vs power or Va) I have replaced the logic, main and power supply but has not fixed the problem. The standby light is red and flashes at a rate of two flashes. I have fixed a few Tv's but this one has stumped me.
