try ebay for a change

 

all picture after remove components here.

i already ckeck on ebay from last one month , but never see my parts salling here.

 

Take a look at the picture and note the numbering.
Read carefully one by one and do them accordingly.

# Put the meter in resistance range and note the resistance accordingly
1. Find the resistance between IC1's pin 2 and marking no.2
2. Find the resistance between IC1's pin 3 and marking no.3
3. Find the resistance between Ground and marking no.3
4. Find the resistance between IC2's pin 2 and marking no.4
5. Find the resistance between IC2's pin 3 and marking no.5
6. Find the resistance between Ground and marking no.5

Now give power to the board through the adapter

7. With the meter set at 20VDC and black probe at negative
Measure the voltage at pin 1 of both the IC 1 & IC 2

Remember to follow exactly as I have asked.
Post the results.
May be this is the final test

 

I Put the meter at 20k in resistance range.
1. Find the resistance between IC1's pin 2 and marking no.2 ----- 0.00
2. Find the resistance between IC1's pin 3 and marking no.3 ------ 0.00
3. Find the resistance between Ground and marking no.3 ------- 6.52
4. Find the resistance between IC2's pin 2 and marking no.4 ----- 0.00
5. Find the resistance between IC2's pin 3 and marking no.5 ----- 0.00
6. Find the resistance between Ground and marking no.5 ------- 9.83

Now I give power to the board through the adapter
7. With the meter set at 20VDC and black probe at negative
Measure the voltage at pin 1 of both the
IC 1 ------ 15.45
IC 2 ------ 15.46

 

Connections are Ok, and no short at the output too.
With supply coming to the IC's only one option left, The IC's are faulty.
Put the components back as it was.
Check IF it works.

If not IC's need to be changed.
But It's rather unlikely to have them both developing fault.
Only solution is to replace them at this stage.
It's wht I would do next.
Sorry buddy.
It's all I can do for now.

 

no problom buddy, i appricate all of your help in this thread from last few weeks continuesly you follow up my thread up to the end to rectify problem of these ic's.
But again i could not get success to find these IC's any where, so if you know where i can buy that will be great. And what we call to this ic's in electronics market checking to buy it.

if not in market then what other ics i can buy for this board.

thanks

 

let me check

 

after remove all ic's board look like this, just looking to buy parts or any other matching parts which is eassy to find in market.

thanks

 

Tester
You do not need to remove the remaining components, only need to change IC.
Just put the rest back. I hope you labelled which goes where as the no.s are important.
Oh ! I forgot, u got the pictures.
Any ways solder the rest back as they tend to get misplaced over time.

I have another way to test the board for any other fault.
For this you need a separate 3.3V & a 5V supply that can handle at least 2 Amps

 

i already got all pictures how to put back all components like orignally was there & i will follow polarities of capacitors & Diode etc, but inductors not having polarities.

If i put other component back before soldering ics then at last it is very deficult to solder ics on this tiny board.

So i must solder ics first on plain board, second Diodes & third Inductors or capacitors, otherwise i cannot solder properly ics at last & while trying to solder ics it will damage other parts those who are tuching soldering Iron.

I already spoiled 2 Capacitors while removing Diodes, but by luckily i got more capacitors same, so i am not worry about caps.

And all old ics which i remove from wrt54gs board have broken, so i can't reuse it.

And i got few ics took it out from old boards having 4 & 4 total 8 legs, but this is not matching part numbers as i need.

 

I hope u did not damage good IC's
By the way these converters can be found in OLD PC motherboards.

If you have an old computer PSU then we can check that board if it works so that you can buy new IC's later

 

i got old computer boards, what i have to look on that board.

yes the old ics which i remove from wrt54gs board they all are damage, because they are very numb the black square portion.

 

i got this from old fta receivers

 

those are memories and op amps.
You shouldn't have taken th IC's. I did not ask you to remove it.
Only the 3.3V & 5V ones needed to replace.
And you took out all of them.

You are restless ... like a working ant. always in hurry
May be this was ur first attempt, am I right?

So what are you going to do about the ones that were not related to the fault? Those IC's need to be there in order to work.

 

yaa i took out all, if i did not get this ic's in market then this board is useless. because it it not eassy to get on any old computer and other boards.

those who are not faulty ics their legs are broken with black portions.

 

If you have taken out a memory and damaged it then u are done for, EEPROM stores data, where can you get them.

 

i look again on that ics , there is no hope to fix it back. i think this is end of this board testing.

 

**********the end************