I will check the the things you circled.

I will see if i can found but i think it is very difficult to found at my local stores. People say never lose hope, So i search for it.

Q6 are the transistor, these transistor are ok i checked.

 

I do not understand the difference between the two transistor, Especially the E13005-2. I could not Found the datasheet of E13005-2 either.

Neither can I. Someone posted that 13005 has 3 type of casing with Ic ranging from 2A (SOT32) - 4A (TO220). Since your 13005 is in TO220 casing, you can treat it as 4A part and the PHE13005 should be fine as a substitute.

I have used up a lot of this type of transistors from 13003 to 13009 in reapairing the energy saving lamps, SMPS PSU for DVD players from China and NiMH battery chargers.

There's no big deal if you have to burn 1 or 2 just to get the job done..

Allen

 

ok Thank you. tomorrow i turn it ON after checking the component and also the resistor which has to be replace. Then i will tell you guys. what happened.

 

I have checking the E13005-2 which is not short, the value at collector is 0.4035 and at emitter it is 0.0050. Did i also change that transistor with PHE-13005.

 

> 0.4035 and at emitter it is 0.0050.

Is that unit is the voltages?
If E13005-2 doesn't damage and your device still doesn't work, then you have to find out which parts could be damage.
If E13005-2 doesn't damage, then when you using PHE-13005 to replace with E13005-2, that is useless.

 

It is in voltage. I have check it through muiltmeter. By put the multimeter to diode.
In the Circuit there are Two of E13005-2 Transistor. One is toasted and one remains. I have circle the transistor.




Regards

 

I have checking the E13005-2 which is not short, the value at collector is 0.4035 and at emitter it is 0.0050. Did i also change that transistor with PHE-13005.

0.4V on the collector is too low for the transistor to work. You're measuring the voltage with respect to what?

Do you know how to trace the circuit from the copper side of the PCB. If you can try to draw it on a piece of paper.

Let's call the transformer on the left T1 and on the right T2. I'd like to know where does the collectors and emitters of both 13005 go to. Do you have a multi-meter with you?

Allen

 

I am measuring the voltage with respect to base of the transistor.
I also have the take out the transistor from the PCB but the voltage remain same which Base-Collector=0.4350 and BASE-Emitter= 0.0053.

I have the multimeter.

I also check the components you circled from which ONE DIODE (SR 230) is also toasted. I am finding that diode also. I could not found it today.


I also try to make the circuit diagram of the PCB.

 

I made the circuit from the PCB which is very difficult for me. i upload the picture. tomorrow i also post the scan copy of the circuit.


Regards

 

when put the the multimeter probe to Transistor(E13005-2) centre leg and check the other two legs then the value comes 0.6V.

 

PIX 1: Is that how you measure the voltages?

PIX 2: This is what I gathered so far from you poorly drawn schematics.

You can refer PIX 3 to PIX 5 and use them as a guide to drawn out your schematics. Dont forget to label the CBE of the two power transistors.

Are your voltages measured with the battery connected or the AC connected? What is the battery voltage when you're testing?

Allen

 

ok. Thank you Allen. I draw it as you attach the picture.

Sorry for the bad schematics.

Thank you for the reply.

 

I have made the schematics Allen. I make the schematics in the Proteus i also attach that file.

I didn't make the full schematics only transistor portion.

I will wait for your reply.

Regards,

Libra

 

the voltage is same for collector to base and collector to emitter 0.465V.

 

i am correcting the above schematic.

 

Please turn off the grid lines when you save a schematic.

 

I have edit the circuit. I put the resistor values which i forget to put in the circuit Schematics.

 

I redraw the circuit.

 

I redraw the circuit.

Thank you Scottwang. So can i replace the transistor E13005-2 with PHE-13005 in this circuit, or not.

Again Thank you.

 

If E13005-2 = KSE13005-2 and its Imax is 2A as you said, then if you want to use PHE-13005 (400V/4A/75W) to replace it, it's OK.