How I use board comparison to repair dead power supply of a sharp tv

The tv power supply got burnt by a high voltage supply and some components were burnt beyond recognition. In cases like this the best thing is to look for same board and compare so as to the exact value of the burnt components.




The burnt components here are the ic strg5653,680 and 0.47ohms resistors,power capacitor



After replacing this is the tv in operation

crt tv repair

How I use board comparison to repair dead power supply of a sharp tv

neyod

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Are you looking for an IC and find it difficult to get in the Market?
Why not contact me today and let me check my store for you probably I may have it.
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Sharp CRT tv flickering on picture not normal

The tv show a wavy kind of picture on screen and only red colour.when its on channel the display will be flickering and unstable.
I opened it up and resolder some dry joints and detect this bulged capacitor of 100v47uf


After replacing with another one of same value I test the tv and it works. The next day the owner brought it back again that the problem still persist. I start to troubleshoot and detect that the 160v100uf filter capacitor is also bad. I changed again and this time the tv works perfectly

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crt television fault repair

Sharp CRT tv flickering on picture not normal

neyod

Neon Lcd Tv Inverter Board Repaired

When you switch on the tv the sound will be heard but the tv screen will be blank and when this happen it is always linked to the inverter board.


Its a 22inch tv and supply to the inverter board is 12v.I want to change this board but decide to check maybe I can fix the board ,its a small board of 4ports.
I check supply to inverter ic and its zero



I trace to the voltage input terminal it was 12v but the smd fuse is bad. I solder a strand of flexible wire to re-fuse it and powered the tv.It worked perfectly its just the fuse that broke that caused the problem.

Neon Lcd Tv Inverter Board Repaired

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How to connect the universal power supply module

In my last post I talked about a universal power supply that's gaining ground on my area. I laid my hand on it and had used it to repair some power supplies that would have been rendered useless. One of such power is that used in a double door refrigerator

To connect the module,neglect the green wire.connect the black wire to the negative terminal of the electrolytic capacitor (400v100uf).For the red wire do not connect to the positive of 400v100uf that's where some people get it wrong but instead as shown in the picture below connect to the other positive terminal on the sm transformer that linked to the power ic or power transistor depending on the type of power supply you want to repair but remember to cut the terminal away from the board



Before switching on reduced the output of the power supply through the variable resistor on it so after switching on you can increase to your desired valued this is to prevent the main board from damage due to excessive voltage.

Recommended:universal power supply that can be useful as replacement in electronics gadgets selling hot on Konga

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power supply

How to connect the universal power supply module

neyod

Universal replacement power supply module that can repair almost any kind of power supply

Though this universal power had been around in my area for quite a while now but a lot of technicians did not take cognisance of it including myself but some had tried it out and that's why I decided to check it out myself.





The result was really appealing especially when I use to repair some type of boards. One of such board is a digital power supply board used in a double door refrigerator and an electrically powered screw driving machine that also has a power fault
I hope to bring the way I connected it and makes it work perfectly in my subsequent post so watch out!
Meanwhile if you are based in Nigeria and needs to buy electronics component online check this new website that is just evolving Naijatronics.com.ng

power supply

Universal replacement power supply module that can repair almost any kind of power supply

neyod

LG Dvd player cannot read disc

The LG home theatre dvd was brought in by a friend and he complaint that whenever he insert disc the message on the dvd player is error disc.
This brand is the original type and has a quality pickup lens that last longer because when such fault occur the main suspect is the lens,however the spinning rotor may also be bad and it may bring about the error disc fault. Unless for cracks or bruises you cannot detect a faulty lens with bare eyes so the best thing is to change it.

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I decide to change the spinning rotor first and see if the fault will be resolved before changing the lens.My decision was right and replacing the spinning rotor clears the fault.

dvd player repair

LG Dvd player cannot read disc

neyod

Panasonic TV: horizontal output transistor blows off frequently

The TV is an old model CRT tv and when tested it makes a hissing sound,initially I thought the flyback transformer is bad but when I checked the output transistor I detect its faulty.I replaced it but about 10s of powering the tv on this transistor got burnt again.I test the voltage at the output transistor collector terminal and it was over 220v instead of 130v.When such situation occurs it is adviceable to check the power supply circuit and from my troubleshooting I detect this 50v47uf capacitor to be defective






I changed it along with the output transistor and the tv works perfectly when tested.

crt television fault repair

Panasonic TV: horizontal output transistor blows off frequently

neyod