hi there.

i have one LCD monitor here;

If i remember right i have replaced all the CE on the both of boards;

begin check level by level and when measured the voltage on the input of bridge rectifier the voltage was ok . then when measure the voltage on input filter big CE i have made some short and the fuse was gone.

In short : i maybe dont have such fuse here. can i replace it till repairing the LCD with basic wire?

Thanks in advance!

 

Hi 159,
Many fuses used on electronic equipment are 'fast' blow types, I would not recommend using regular wire.
If you have a suitably rated 'fast' fuse element in your bits box, that would be OK, solder leads to the fuse.
E

 

i just fine one from other monitor board;

is that fault - how do you think ?

 

hi,
In theory the original should 'blow' before any other damage should occur.

Why were you measure the voltages? is there a fault on the equipment.?

E

 

The monitor was not working. I was just learning and after replacing all CE on both boards have began one by one check from the PDF i read...

Most probably have made short by my mistake.

the power thermistor i might see it as broken. How do you think?

What to replace with except the same ?

http://www.datasheetspdf.com/pdf/675089/Voltts/SCK-084/1

 

i see zero power resistance from pdf 8 Ohms.

i measure it out of board 20 Ohms and rising a little...

 

hi,
If you can read the type of thermistor on the old thermistor, usually printed on the thermistor body, I would purchase an exact replacement.
If you cannot read the printed name, do you have a datasheet for the faulty equipment.
E

 

i have pdf for the monitor and in this pdf its written sck 084

on the element i see sck-084

the question - is this measurement i have done right ?

in the pdf of the element its written 8ohms zero power resistance, i measure 20ohms..

 

hi,
Looking at the datasheet, I would say that would be OK, the resistance will depend upon the body temperature of the thermistor.
E

 

have replaced the faulty fuse with good one (same values and type)

have put back the thermistor and there was boom again;

now where to look for that short because of which the voltage/current is going too big...

 

hi,
Are there any components in the power supply showing signs of damage.?
Leaking , burnt etc
E

 

 

hi,
Looking thru those images, it showing damage, it should be possible to trace the problem.
Disconnect the monitor from the mains supply, ensure than any capacitors are discharged and carry out a resistance test along the burnt track/components.
E

 

ensure than any capacitors are discharged
>
think you mean that*

you want to test concrete resistance out of board or? i didn`t understand. please explain

edit : i think this burnt on the capacitors can be from the Thermistor...?

 

The bridge rectifier is faulty.

Can i replace GBU405 with PBL405

 

hi,
Looking at the datasheet for those two rectifiers, they are 600V at 4A, so OK


http://www.semicon-data.com/diode/db/pa/PBL405.html