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  1. Tha fios agaibh

    Reflow Bga chip.

    Thanks bushtech. I'll take it as a success, even if its just a quasi- fix.
  2. Tha fios agaibh

    Reflow Bga chip.

    I reflowed the gba graphics chip (again) at 370c. Tv is back to working again although I'm not sure I'm confident enough to hang it back on the wall. (heavy plasma) Who knows if I'll get another 9months out of it or not.
  3. Tha fios agaibh

    Reflow Bga chip.

    Why doesn't my post showing up under "new posts"?
  4. Tha fios agaibh

    Best place to buy used electronics?

    Search for local tech club meet ups, Ham radio swap meets or "Hamfests"
  5. Tha fios agaibh

    Reflow Bga chip.

    Update: I got 8 months use out of it. But the Tv just died again, and I'm back to a pink/green screen.:( I guess I'll try and reflow the chip again with my hot air gun and see if it does anything. Is there a recommend heat range I should try?
  6. Tha fios agaibh

    Articles- Slight Error

    I update my Roman numeral proficiency during superbowl season.
  7. Tha fios agaibh

    Articles- Slight Error

    I agree, someone writing an article should be more accurate. Referring to household voltage as110v has become so pervasive that it has become part of our permanent vernacular. If asked for a voltage requirement (such as ordering an appliance), you are nearly always asked "110v or 220v?"...
  8. Tha fios agaibh

    240 V water heater ground and neutral

    Yes, Hot or ungrounded line conductor. (You'd probably call it "mains") Awg is American wire guage. We also use circular mils, usually for larger wire sizes. 10awg is equal to 10380cmil, or just under 5 sq mm. Neutral is a term often (mis)used in single phase but it is not actually a neutral...
  9. Tha fios agaibh

    240 V water heater ground and neutral

    You should really consult a qualified electrician. You may not need to upsize as many heaters only energize one element at a time alternating between the two. Thats likely why it's only rated 4500w. But don't guess at it, consult someone qualified who's there to actually look things over. You...
  10. Tha fios agaibh

    Machine Tool Repair

    I haven't looked at the specs but a uln2003 driver may work for you. edit : With, but not in place of the 2981a
  11. Tha fios agaibh

    Keyboard PCB Repair please help.

    Oh you're right. Sorry, should've looked closer at picture.
  12. Tha fios agaibh

    Keyboard PCB Repair please help.

    What did you use for lube? The points on the circuit board that make contact to form a switch need a conductive paint or paste applied. It's a carbon paste that gets brushed on like nail polish to the spots directly under each key of the membrane.
  13. Tha fios agaibh

    Isolation Transformer?

    No, you should be honest. A massive company worth a trillion dollars shouldn't have any trouble sourcing qualified people to do the job correctly. This wouldn't be their first rodeo. I'm with bluejets, get someone qualified to do the job so no one gets hurt.
  14. Tha fios agaibh

    hi there

    I was thinking Power factor.:D
  15. Tha fios agaibh

    Spare time for tinkering

    On one side you are justified getting angry having your stuff thrown out without being asked, but she also has a reasonable expectation to not keep unused clutter for extended periods of time. Question is: Is it really worth keeping a sizeable collection of junk around for years... or even...
  16. Tha fios agaibh

    Spare time for tinkering

    I'm not "down" (or, PMSing((Lol)) nor, do I even particularly agree that "life's a bitch". I guess I'm feeling overwhelmed with having so many irons in the fire right now and the sheer amount stuff I've collected. Last evening I got ticked off at myself and started bagging up stuff for...
  17. Tha fios agaibh

    Spare time for tinkering

    I imagine I'm not the only one that feels this way, but there doesn't seem to be much time left for electronic projects after work, family time and keeping up the maintenance on our house and property. I have projects that have literally sat on the shelf for years that I'll probably never get...
  18. Tha fios agaibh

    Dab radio with annoying shriek!!

    Look closely for cold solder joints or cracks in the circuit traces. Use bright light and strong magnification. You may find that slightly twisting the circuit board after you unmount it will make it go away. I have solved this problem a few times by merely putting a spacer under the board to...
  19. Tha fios agaibh

    Please explain this resistance reading

    I suggest getting an assortment of resistors and experimenting with a battery and an incandescent lamp.(Not an led) What resistors alow a current to flow and make the lamp glow? There is no real answer to the question because it depends on the voltage and acceptable current in the circuit. For...
  20. Tha fios agaibh

    3kw inverter repair

    Probably something on driver board isn't firing your gates. Perhaps ir2110s or related components. Did you check all your diodes?
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