repairs to circuit board

gerry3 · 3rd April 2011, 10:39

Can any one help me,
I have a Milling machine and a small circuit board has burnt out.
Part of the tracking as gone and a trasistor as melted two of the legs.
The problem is that I cannot find a replacement board.
I have tried to obtain a complete speed control unit but can only find one supplyer who is in Canada, which would prove very costly.
So my question is "doe's any one know of a company" in this country who would look at the board and possibly repair it.
The Milling machine is used mainly for making "Gerry Tees" and I need to sort it out has soon as posible.
I can send photo's of the board via e-mail if any one would like to see it.

Thank you,
Gerry.

CDTi · 3rd April 2011, 11:58

If this is a single layer board, then anyone who is handy with a soldering iron could probably fix it.

Can you post a pic of the damage?

Phil-T4 · 3rd April 2011, 12:59

Send me the photo's, top, bottom and if possible a side view to see if its multi layer..

gerry3 · 3rd April 2011, 14:14

Sorry but I do not know how to post photo's on the forum but if any one would like to send me there e-mail address I would be very happy to send as many as you need. I do know that it is a single layer board but as for my being able to solder so small is an other matter.
I had a stroke sometime ago and controlling my hand to so fine a degree is very difficult.

Anthony & Maricel · 3rd April 2011, 14:37

Post a Photo please I am Professional Electronics Repair Tech, to post a picture click go advance and click on the paper clip button and select your picture and click upload.

gerry3 · 3rd April 2011, 14:56

I have tried to post a photo of the Board on this forum, if it a success then I can send others.
Thank you for your help.

Gerry

gerry3 · 3rd April 2011, 15:11

And another to show the damaged area. Please note that some of the track is burnt out also in this area.

Anthony & Maricel · 3rd April 2011, 15:35

It is a double sided pcb, looks like it can be repaired fairly easily but some of the other components will need checking out with a multimeter to make sure they are not damaged and the transistor will need replacing.

Can you read the part number of the transistor on the flat side? as long as we know what it is it should not take long to get it up and running again.

gerry3 · 3rd April 2011, 15:54

Quote:

Originally Posted by ukmoobs

It is a double sided pcb, looks like it can be repaired fairly easily but some of the other components will need checking out with a multimeter to make sure they are not damaged and the transistor will need replacing.

Can you read the part number of the transistor on the flat side? as long as we know what it is it should not take long to get it up and running again.

I have had a look for any markings on the transistor and they are,
Top line, " 2N"
Second line, "5551 "
Third line, " BO11"

If you think you may be able to help with the repair , the board is only 10 X 7 X 3.5 cm. high, so I could quite easy post it for you to look at.

Gerry

Anthony & Maricel · 3rd April 2011, 17:35

Yes this can be done no problem, can you pm me please and I will give you my address and phone number so you can send it to me, I will need your telephone number so once I have taken a proper look it for you I will contact you.

The Transistor is a 2N5551 general purpose NPN transistor will be easy to get hold of.

3rd April 2011, 10:39	#1
gerry3 Passed Away rover 75 saloon Join Date: Feb 2008 Location: leeds Posts: 186 Thanks: 0 Thanked 0 Times in 0 Posts	repairs to circuit board Can any one help me, I have a Milling machine and a small circuit board has burnt out. Part of the tracking as gone and a trasistor as melted two of the legs. The problem is that I cannot find a replacement board. I have tried to obtain a complete speed control unit but can only find one supplyer who is in Canada, which would prove very costly. So my question is "doe's any one know of a company" in this country who would look at the board and possibly repair it. The Milling machine is used mainly for making "Gerry Tees" and I need to sort it out has soon as posible. I can send photo's of the board via e-mail if any one would like to see it. Thank you, Gerry.

3rd April 2011, 11:58	#2
CDTi This is my second home No longer in the MGR club Join Date: Nov 2006 Location: Tipperary Posts: 3,933 Thanks: 35 Thanked 51 Times in 35 Posts	If this is a single layer board, then anyone who is handy with a soldering iron could probably fix it. Can you post a pic of the damage? __________________ 'Tis better to be silent and be thought a fool, than to speak and remove all doubt.

3rd April 2011, 15:35	#8
Anthony & Maricel This is my second home Rover 75 Connoisseur 1.8L pre production S573 AOX Vin 001493 Feb 1999 Join Date: Mar 2011 Location: Leicester Posts: 5,145 Thanks: 642 Thanked 318 Times in 259 Posts	It is a double sided pcb, looks like it can be repaired fairly easily but some of the other components will need checking out with a multimeter to make sure they are not damaged and the transistor will need replacing. Can you read the part number of the transistor on the flat side? as long as we know what it is it should not take long to get it up and running again. Last edited by Anthony & Maricel; 21st April 2011 at 19:53..

3rd April 2011, 17:35	#10
Anthony & Maricel This is my second home Rover 75 Connoisseur 1.8L pre production S573 AOX Vin 001493 Feb 1999 Join Date: Mar 2011 Location: Leicester Posts: 5,145 Thanks: 642 Thanked 318 Times in 259 Posts	Yes this can be done no problem, can you pm me please and I will give you my address and phone number so you can send it to me, I will need your telephone number so once I have taken a proper look it for you I will contact you. The Transistor is a 2N5551 general purpose NPN transistor will be easy to get hold of. Last edited by Anthony & Maricel; 21st April 2011 at 19:53..

3rd April 2011, 12:59	#3
Phil-T4 I really should get out more....... MG ZT-T, Rover 75 Tourer Join Date: Mar 2011 Location: Olney Posts: 2,969 Thanks: 245 Thanked 1,088 Times in 657 Posts	Send me the photo's, top, bottom and if possible a side view to see if its multi layer..

3rd April 2011, 14:14	#4
gerry3 Passed Away rover 75 saloon Join Date: Feb 2008 Location: leeds Posts: 186 Thanks: 0 Thanked 0 Times in 0 Posts	Sorry but I do not know how to post photo's on the forum but if any one would like to send me there e-mail address I would be very happy to send as many as you need. I do know that it is a single layer board but as for my being able to solder so small is an other matter. I had a stroke sometime ago and controlling my hand to so fine a degree is very difficult.