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Repair of FR4 double-sided pcb

Dave Milk

#21286

Repair of FR4 double-sided pcb | 22 August, 2002

While separating individual pcbs from a panel, operators have caused delamination of the edge of the board, at the tabs that were cut. How can these boards be repaired? The delamination causes them to fail J-STD-001C 9.2.1.1.d. Also, what would you recommend for cutting these boards apart? We are presently using standard diagonal cutters to cut the tabs that hold the boards together in a panel.

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#21296

Repair of FR4 double-sided pcb | 22 August, 2002

Ooooow!

�Can it be fixed?�

Good question. How BAD did you damage it? * Since you are asking this question, I am NOT inspired by the potential that you have the skills to fix the board. Go Jeff Ferry�s site at Circuit Repair Center [If you can�t find the site real quick with your browser, search the fine SMTnet Archives for links.] to get a better understanding of the requirements of this repair task. [CRC has work instructions for completing various repair tasks. Very neat thing.] * There are bunches of board repair service providers out there. [There may be a list in the fine SMTnet Archives, but I�m not positive. If not, say so.]

�What would you recommend for cutting these boards apart?�

A Husqvarna 382XP will do fine. �Husqvarna's professional range is developed in close co-operation with professionals all over the world and incorporates safe and labor saving design solutions. Powerful and with high torque, but still easy to handle and work with on long shifts. High power and superior ergonomics specifically designed for professional users. All Husqvarna professional chainsaws are reliable and tested and have inertia-activated chain brakes and LowVib vibration damping system.�

Haaaaa!!!

Cereally, the method used in exercising [hit the deck and give me fifty, Resin Breath (Oops. Fudge!!! I was going to be serious. Damn!!!) I just chugged a bag of Cheese-Its. I�ve got to get out of here and eat dinner.] boards from panels is largely dependant on the volume level of production. Designers of boards with �mouse bites� usually have not given the slightest consideration to depaneling. Search the fine SMTnet Archives for discussion on: * Routing * Singulation * Punching * Nibblers

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Dave Milk

#21302

Repair of FR4 double-sided pcb | 23 August, 2002

Thanks for your help, Dave.

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dragonslayr

#21322

Repair of FR4 double-sided pcb | 26 August, 2002

first time I've heard of the Cheese Its defense to excuse any momentary lapse of reason. I think I'ma gonna order me a case of them nibbles right away. A guy can't be too careful now adays.

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#21323

Repair of FR4 double-sided pcb | 26 August, 2002

Sure, the 'Cheese It' Defense is an analog of the 'BIG GULP of Dew' Defense.

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#21358

Repair of FR4 double-sided pcb | 29 August, 2002

I prefer to eat my crunchy Cheetos while drinking a cold Southpaw Light, at home.

My second choice is a Mountain Dew and Cheetos in the afternoon to get me through the rest of the day.

All y'all have a good holiday weekend.

Mike F

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Cris Campos

#21435

Repair of FR4 double-sided pcb | 6 September, 2002

To Scrap or not to Scrap? We have the answer to your problem.

Visit http://www.circuit-techs.com for more information regarding Printed Circuit Board Repair, Rework & Modification in accordance to IPC 7711 & 7721.

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