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Panasonic TX 28DK1L TV

Tripping to standby after switch on, Have replaced power voltage reg, line output transistor, vert.output i.c.all to no avail, would appear that protection circuit is in operation.( have no circuit diagram to help me) Have 30 years in electronic servicing.Please help!! best regards Frank.

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Replace the capacitor and the resistor as well as the diode that feeds the b+ to the vertical IC.

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SOURCE: No Power on Sony TV

Be sure to use an ORIGINAL Sony transistor and be sure to resolder the pins of the small horizontal driver transformer and all parts connected to and around it, and your set should be fine.

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SOURCE: RCA color tv,model 27F520T,Chassis M134C

On the tv panel push and hold volume down until volume is all the way down and keep holding, then push the info button on the remote.

Posted on Jan 16, 2008

SOURCE: need circuit diagram for bush

Diagrams i am sure as you know are not always easy to come by, at least for free. I see that there are available boards online and a company that will rebuild this model of power board for you in UK. is where it is at. looks like $80

Posted on Oct 16, 2008

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I have Panasonic CRT TV, Model No. - TX-32WG25X. The main problem is that in half screen of TV horizontal lines are appearing along with picture and sound is not coming

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

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Why my sony TV ES29M80 switching to standby mode immediately?

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.

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Panasonic TX-P42X10B wont turn on - goes into standby

Hard to troubleshoot with just this info, the red light can be helpful if its 10 blinks repeating over and over replace the power supply first then the A board. Voltages check on the power supply would narrow down the culprit.
Post again if you measure the power supply voltages

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May 03, 2012 | Televison & Video

1 Answer

The tv is a 32"

The horizontal output transistor of your RCA TV has shorted. Horizontal output transistor is one, that drive the Line Output Transformer [LOT] in short, which gives voltages requred to the picture tube of your tV. There are mainly two resons for this transistor shortage. If the above said LOT has shorted [a winding short in between at its inner side; and is irreparable]; and for some other reasons which cannot be predicted. First replace this transistor, which can be located very near to the LOT and will be screwed onto a metal heatsink to radiate heat away from it while working.
It will be three terminal black component. Replace it with same type and number, and switch ON your tV for a short time, say 4 seconds or so; unplug the device from AC mains wall socket, touch the replaced component with bare fingers and feel the heat. It may be slight warm, bu not too hot. If LOT has damaged, this transistor also will heat up, and a whisiling sound will be there. If so; never switch it ON again; replace the LOT and it is damaged. OK.

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When switching panasonic tv on it goes into standby

It is for sure that your set has encountered a fault in the power section in the main board. There could be either a failure or a break in the circuit. So first of all open and check the main power board for any signs of dry soldering joints. Use a good soldering iron and a good light to probe. Solder all possible areas specially ones closer to the power resistors and drives. next check the +B voltage, trace it or disconnect from the ddrive to confirm the failure. You must use a good multimeter to check from the power section which is working and is cutting off due to a failed feedback. If not familiar do not attempt but take help. I hope you can decide and try. Good day

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1 Answer

I have a Model DX-R24TV suddenly it wont come on green power "on" light flashed and now I hear clicking inside what is it and where can I get parts?

The clicking noise you are hearing can be from the HT power section. The Main power is trying hard to switch on the set but the feedback signal is missing to the SMPS-switch mode power supply- that makes the protection to cut and power. You will need to check onthe EHT, the line output transformer, the EHT driver transistor and the allied ccircuits for any short which is making the +B cut off. check onthe high voltage capacitors, the vert output also for any short. replace the shorted component. The spares must be tried for availability in the nearest spare shop. If it is the EHT you must check and decide with the price of a new one. I hope this helps. Good day

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1 Answer

Panasonic TX-29ps stdby LED only 2 seconds after switching to the network, everything else is dead. However, Switching PSU IC801 provides voltage to 5V for stdby.

check : H-output tangester / EHT output voltage line 12v /24v 180v check dyiod /capaciter / ragistance ..
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1 Answer

Hi, I have a panasonic tv model tc21xy3 standby power only red liht can you give a solution of this trouble pls.

Your Tv Horizontal deflection doesn't work, try to switch ON your TV by remote control or by pressing the program up or down button in the TV set. If still working check the B+ in the capacitor rated 200Vdc. monitor the voltage as you press the program button, it must have a 90vdc , or remove first the Horizontal Output Transistor before you switch on the Tv. Then monitor the Voltage in B+. If it is present your Power supply is good, if not then check the component in Power supply section. if the B+ is present check the horizontal area.

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1 Answer

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Check Horizontal Output Transistor....if shorted,replace both
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1 Answer

Panasonic model TX-29GF10X, went on stand by , and not Switching ON again, what is the majore cause?? or what does the TV need to restart again

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