Russelld58 Posted January 13, 2022 Share Posted January 13, 2022 Aloha all, The circuit board on my '62 Special is deteriorating. Any suggestions for replacing the circuit board? Having a hard time finding one in good condition. Mahalo! Russell Link to comment Share on other sites More sharing options...
joe_padavano Posted January 13, 2022 Share Posted January 13, 2022 No one makes new ones, so good used is your only option. The alternative is custom point-to-point wiring. Link to comment Share on other sites More sharing options...
Russelld58 Posted January 13, 2022 Author Share Posted January 13, 2022 Thanks, Joe. Is the point to point time consuming work? I'll be paying by the hour. Link to comment Share on other sites More sharing options...
joe_padavano Posted January 13, 2022 Share Posted January 13, 2022 38 minutes ago, Russelld58 said: Thanks, Joe. Is the point to point time consuming work? I'll be paying by the hour. It's essentially building a custom wire harness. If you're paying someone to do it, it will likely be pricey. What is your problem, exactly? Is the circuit board actually cracked? On my similar 62 F85, I've had a problem with recurring corrosion at the pins that connect the dash harness to the circuit board. I'm likely going to remove those pins and solder in modern Weatherpack connectors to eliminate this problem. The circuit board itself is not the problem. You might want to check for corrosion at the connection points. Mild abrasion (a pencil eraser is often all you need) can clean the copper terminals. 1 Link to comment Share on other sites More sharing options...
Russelld58 Posted January 14, 2022 Author Share Posted January 14, 2022 Thanks, Joe. This is helpful. Below is a photo of a 64 skylark board. On mine, the circles (I don't know what you call them) are separating from the board--flaking off. Link to comment Share on other sites More sharing options...
joe_padavano Posted January 14, 2022 Share Posted January 14, 2022 Those are copper traces, which are the conductors. The phenolic board is just the insulating substrate that holds them. Once the board is installed, the mounting studs should hold the copper traces in place. So long as the copper isn't torn and is making good electrical contact, the rest is just cosmetic. Just be careful when tightening the nuts on the instruments that you don't dislodge the trace and cause it to short to an adjacent one. The biggest problem might be at the edges of those lamp holder cutouts, where the trace is only part of a circle. If necessary, you can tack them back down with a thin layer of epoxy. Just be sure the face that makes electrical contact is clean. 1 Link to comment Share on other sites More sharing options...
8E45E Posted January 17, 2022 Share Posted January 17, 2022 If you are handy with 2D Autocad, you can draw it and save it as a .dxf format. Thin copper sheet can be laser cut to the exact same pattern. Craig Link to comment Share on other sites More sharing options...
mike6024 Posted January 17, 2022 Share Posted January 17, 2022 Maybe you can repair it by laying some solder over the loose or broken copper, and reconnecting it to to "contact points." Link to comment Share on other sites More sharing options...
joe_padavano Posted January 17, 2022 Share Posted January 17, 2022 (edited) 1 hour ago, 8E45E said: If you are handy with 2D Autocad, you can draw it and save it as a .dxf format. Thin copper sheet can be laser cut to the exact same pattern. Craig Etching a circuit board has been done chemically for a century. You don't need CAD or lasers. You used to be able to buy the kits at Radio Shack. Edited January 17, 2022 by joe_padavano (see edit history) Link to comment Share on other sites More sharing options...
Laughing Coyote Posted January 17, 2022 Share Posted January 17, 2022 Or use this. McMaster Carr View catalog page Forward Print How can we improve? 27 Products Conductive Copper Foil Electrical Tape Use this tape to modify printed circuit boards, shield components from EMI/RFI (electromagnetic interference/radio-frequency interference), and prototype wiring-board layout and design. It can be soldered. Tape with conductive adhesive meets Mil. Spec. MIL-T-47012. Short Roll Long Roll Wd. OverallThick. Adhesive Type TemperatureRange, °F Voltage Rating Specifications Met Lg.,ft. Each Lg.,ft. Each Nonconductive Adhesive 1/4" 0.0029" Acrylic -40° to 325° Not Rated UL 510 18 76555A721 $8.25 108 76555A651 $20.34 1/2" 0.0029" Acrylic -40° to 325° Not Rated UL 510 18 76555A722 16.39 108 76555A648 40.17 3/4" 0.0029" Acrylic -40° to 325° Not Rated UL 510 18 76555A723 21.31 108 76555A649 56.42 1" 0.0029" Acrylic -40° to 325° Not Rated UL 510 18 76555A724 24.13 108 76555A652 66.02 2" 0.0029" Acrylic -40° to 325° Not Rated UL 510 18 76555A725 46.87 108 76555A654 124.74 3" 0.0029" Acrylic -40° to 325° Not Rated UL 510 18 76555A726 70.42 108 76555A655 173.15 6" 0.0029" Acrylic -40° to 325° Not Rated UL 510 18 76555A73 128.32 __ ______ __ Conductive Adhesive 1/4" 0.0035" Acrylic -40° to 325° Not Rated MIL-T-47012, UL 510 18 76555A711 11.54 54 76555A641 22.36 1/2" 0.0035" Acrylic -40° to 325° Not Rated MIL-T-47012, UL 510 18 76555A712 23.00 54 76555A642 41.38 3/4" 0.0035" Acrylic -40° to 325° Not Rated MIL-T-47012, UL 510 18 76555A713 29.50 54 76555A643 62.31 1" 0.0035" Acrylic -40° to 325° Not Rated MIL-T-47012, UL 510 18 76555A714 31.77 54 76555A644 71.26 2" 0.0035" Acrylic -40° to 325° Not Rated MIL-T-47012, UL 510 18 76555A715 61.20 54 76555A646 130.40 3" 0.0035" Acrylic -40° to 325° Not Rated MIL-T-47012, UL 510 18 76555A716 89.31 54 76555A647 185.04 6" 0.0035" Acrylic -40° to 325° Not Rated MIL-T-47012, UL 510 18 76555A719 154.56 54 76555A731 341.88 Link to comment Share on other sites More sharing options...
37_Roadmaster_C Posted January 17, 2022 Share Posted January 17, 2022 I have worked with circuit boards for over 45 years and from the picture yours does not look very bad. With that said the advice above is very good. Circuit boards can be repaired with careful soldering and small wire to bridge any cracks. On stud hole connections a small copper washer is your friend as it gives the nut something to press and turn against. A couple of other options are to make your own circuit board. The process and materials are readily available. The other and best option, in my opinion, is to have a circuit board made at a professional board manufacturer. Today it is fairly cheap and easy with online sources. You will need to research and learn a little to make a good decision. In short it only requires you to draw the board, mark the holes and hole size and you are good to go. There are many ways to "draw" the board from dedicated software, CAD and I saw somewhere where a photocopy of an original circuit board could be converted into a board file. Do a little research on "printed circuit board design" or "printed circuit board prototyping" and you will be started... 1 Link to comment Share on other sites More sharing options...
joe_padavano Posted January 17, 2022 Share Posted January 17, 2022 You all are focused on repairing broken traces, but if you read the OP's posts, he says the problem is that the traces are delaminating from the substrate. 1 Link to comment Share on other sites More sharing options...
SC38dls Posted January 18, 2022 Share Posted January 18, 2022 If you need help or a reference on “how to”or “who does” printed circuit work you may want to check out a magazine called “PRINTED CIRCUIT and DESIGN” they are on line. Not sure it will help but I do know it is one of the best information sources in that industry. dave s Link to comment Share on other sites More sharing options...
Digger914 Posted January 18, 2022 Share Posted January 18, 2022 Having owned a circuit board repair company doesn't make me an expert in circuit board repair, but this isn't a multi layer board with a broken connection three layers deep and you don't need to be an expert to fix these loose traces, jellied super glue does the job and it's easy to use. 1 1 Link to comment Share on other sites More sharing options...
Digger914 Posted January 19, 2022 Share Posted January 19, 2022 On 1/16/2022 at 8:26 PM, joe_padavano said: You used to be able to buy the kits at Radio Shack. Not Radio Shack, but a great place to find a new solid state vibrator for an old 6 or 12 volt radio, new string for an old tuner display, new heads and motors for your old cassette player and some build it yourself project kits. http://www.wjoe.com/elect_kits.htm 1 Link to comment Share on other sites More sharing options...
mike6024 Posted January 19, 2022 Share Posted January 19, 2022 6 hours ago, Digger914 said: Having owned a circuit board repair company... Well he should just mail it to you then. Problem solved. For the cost of postage. And maybe some loose change for payment. 1 Link to comment Share on other sites More sharing options...
Digger914 Posted January 20, 2022 Share Posted January 20, 2022 On 1/18/2022 at 8:23 PM, mike6024 said: Well he should just mail it to you then. Problem solved. For the cost of postage. And maybe some loose change for payment. Even if it would fit in a flat rate box, postage would still be exponentially more than a tube of super glue and that's before you toss in the loose change. 1 Link to comment Share on other sites More sharing options...
radioguybill Posted January 20, 2022 Share Posted January 20, 2022 Wht not just replace it with modern am fm electronics. There are lots of us out there doing it and it will most likely last longer than any repair. Options are bluetoothusb and hd Probably ending up costing a lot less in time and labor then the trime and parts put into it. bill Link to comment Share on other sites More sharing options...
joe_padavano Posted January 20, 2022 Share Posted January 20, 2022 5 hours ago, radioguybill said: Wht not just replace it with modern am fm electronics. There are lots of us out there doing it and it will most likely last longer than any repair. Options are bluetoothusb and hd Probably ending up costing a lot less in time and labor then the trime and parts put into it. bill Because if you actually read this thread, he's talking about the circuit board for the INSTRUMENT CLUSTER, not the radio... 3 3 Link to comment Share on other sites More sharing options...
radioguybill Posted January 24, 2022 Share Posted January 24, 2022 My apologies Link to comment Share on other sites More sharing options...
Benjaminsmith Posted February 16, 2022 Share Posted February 16, 2022 Printed circuit board can be repaired or remanufactured to bring them back to life. One of two things happens as a result of this. Either the board or the gadget in issue can be returned to its original state and made to work again. Or, as a sort of recycling, it can be utilized in an entirely different gadget. The process of adding electronic components to a printed circuit board is known as printed circuit assembly. I had bought printed circuit board from FCC GROUP LIMITED. Link to comment Share on other sites More sharing options...
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