Best Drives & Storage Devices

15 Comments

1. none2perdy
   Posted March 6, 2010 at 8:37 pm | Permalink

   The most important thing you need is schematics for the board. Without them, even the most accomplished diagnostic tech or engineer will be all but lost.The next best thing to have would be an O-scope.Start with a visual inspection, followed by a configuration check. This means assessing the state of preprogrammables, and non-volitiles. Then powerup and continue by checking power, clocks, resets. If the board has a microprocessor or sequencer of some kind, check the most basic functionality of that, by looking for bus cycling or some other kind of low level output sequencing.Good luck…

2. Tom M
   Posted March 7, 2010 at 8:13 am | Permalink

   Try this onehttp://www.freepcb.com/

3. Steve B
   Posted March 7, 2010 at 7:41 pm | Permalink

   hmm you might want to try soldering over the entire PWB trace to make it a thicker piece of metal and then glue it down to the PCB to reinforce it.

4. tigerkitty2
   Posted March 8, 2010 at 8:12 am | Permalink

   a conductive pen may work, but i think you’d have better luck with a rear windshield defogger repair kit. you’ll have to prep the surface with some type of abrasive to expose the metal in the ribbon cable.alternatively ebay has a “wanted” section, you could post what you need and those guys will contact you with offers,

5. semdot
   Posted March 8, 2010 at 8:14 pm | Permalink

   It’s possible but may be difficult. The hardest thing, if they are square pins, is to get the flat sides aligned with the other pins. Round pins are easier.The pins either came pre-installed on a plastic header that holds them in position while soldering, or they were staked into the circuit board. If they were in a plastic header, again things are not too hard. Just push them back through the plastic and solder. If there is no plastic, it means the pins were “staked”, which means they were pressed through a force fit PCB hole. It will be a little difficult to force back through the hole without bending the pin.If all else fails, most pin headers come in standard confingurations, and replacements are not that hard to find.

6. hogie0101
   Posted March 9, 2010 at 8:34 am | Permalink

   Do it yourself type?If so, believe it or not, radio shack still carries a do it yourself kit.Model: 276-1576Catalog #: 276-1576Obviously follow the directions but basically:1 Use the provided Pen to draw out your circuit paths. Remember the parts mount through the top so the actual circuit paths need to be laid out with that in mind. I have seen many a foiled home projects because the board was laid without taking this in to consideration. When the board was flipped over to install the parts then pin orders are wrong for the chips or transistors end up backwards, etc. 2 Then put your board in the etch bath.Couple tricks. A) Make sure the board is really clean before drawing out the paths. B)Make your paths wide enough so a little under cutting by the etch won’t cause an open. C)Keep the etch bath warm. D)If you have an old fish tank air bubbler you can poke multiple holes along the length of some tube to cause agitation in the etch solution. Or you can gently rock it. E)Make Ground or negative paths big and around the perimeter of the board, the less you have to etch the easier it will be and the better the boards will look. It doesn’t make the best boards but if you need a simple board or two it all right.There used to be photo copy transfer sheets available for making circuit boards. Basically you loaded this special clear sheet in to a photo copier and Photo copied your design on to it. Then you would Iron on the “toner” that the photo copier deposited on the clear sheet on to the board. The toner would block the etch. It allowed one to make better looking boards but you still have all the problems of making a PCB at home, over and under etching.I built a couple home electronic crossovers using both methods. After much trial and error I was able to make a few passable boards.If you need more than a few have them made for you.

7. hg10367
   Posted March 9, 2010 at 7:54 pm | Permalink

   PCB’s are the circuit boards that components are built on with the wiring designed directly into the board itself connecting everything to make it work. IC’s(integrated circuits) are sometimes used on PCBs but are designed differently using CAD programs and then manufactured (sometimes by “growing” the materials via photolithography). IC’s are designed to do one thing (although some can be reprogrammed by firmware changes but the physical hardware remains the same).To put it into perspective the motherboard inside your PC is on a PCB while the black “chips” you see on it (like your processor) are IC’s

8. CrO4^2-
   Posted March 10, 2010 at 7:46 am | Permalink

   It probably could. People can run arcade games in arcade machines using emulators. You’d have to know about arcade emulation to do it this way.

9. fnsurf
   Posted March 10, 2010 at 7:47 pm | Permalink

   I have done extremely small strain gage devices with the aid of a microscope and a small tipped iron. But it isn’t easy. I could see that wave would work better for a production environment on PCBs.

10. Ashley
    Posted March 11, 2010 at 8:08 am | Permalink

    to create a pcb you use a UV exposure box which exposes a printed circuit which has been printed back to front to a special clear plastic sheet.2, expose plastic sheet to photo PCB Board3, Develop PCB Board in Developer4 Wash developer off once u have image on board.5, etch pcb now as normal.6, drill board were to fit components.7. solder components into place.hope this helps )

11. sandra j
    Posted March 11, 2010 at 7:48 pm | Permalink

    Oh~~a big trouble!!http://www.toboc.com/forum3/DEFAULT.ASPX?g=posts&t=837http://oil_purifier.toboc.com/forum3/default.aspx?g=posts&m=1077http://www.toboc.com/forum3/default.aspx?g=posts&m=983

12. BigDaddySteven2006
    Posted March 12, 2010 at 8:07 am | Permalink

    Enough to fill that one square meter?……..

13. pipe strangler
    Posted March 12, 2010 at 8:24 pm | Permalink

    Is the boiler thermostat turned right up? Its unlikely to be the wrong board as I dont think BG are that bad and there cant be that many others that will fit and work and there are no adjustments needed on a replacement board as against some boilers.The other possibility is that the knobs were not refitted on the same alignment as before (if that is possible)on the splines on the shaft behind the knob. If it wont turn up any higher get them back to look at it

14. T W
    Posted March 13, 2010 at 8:15 am | Permalink

    I got useful accessories at http://techawave.jitbid.com/techawave/index.php?main_page=product_info&products_id=532714

15. Christian Soldier
    Posted March 13, 2010 at 7:47 pm | Permalink

    If you are going to attempt this yourself, I would get set to buy a new laptop. I have done this about 12 to 15 times and I sometimes have difficulties on some of them. The hardest thing is removing some of the plastic panels that snap off and back on. That and the alignment of the very complexed components. If you get a diagram and take your time, you might succeed.