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  1. 73's de Edd

    power supply

    Sir pwnstars . . . . . . . You are CORRECT on the assumption of the supplys basic ground . . . . . .however. . . . . . . That D5's cathode is going up and connecting to the raw AC supply and its anode is then the source of negative pulsating DC to the C2 filter cap, where it gets filtered...
  2. 73's de Edd

    Battery over discharge cut-out circuit help

    . Two "do it yerself " exampes fer ye . . . . 73's de Edd .
  3. 73's de Edd

    Vhf radio tx issue

    Sir portishead . . . . . . . I don't know if any one can help with this.. Not without more exacting specific information . . . . .even utilizing level 12 ESP capabilities . . . . I have a vhf radio on a boat. I'm trying a new main antenna. Brand of antenna and model . . . . . and do you stay...
  4. 73's de Edd

    Searching part number for 690KE

    Did you ever confirm . . . . . you realy-realy-really should have given us the brand and model of the monitor that it was in. I see some of that gm5621 series of u/p's being used in Dell's. Matter of fact, some AOC monitors also use that u/p unit for its brains . . . . .but by the time lag...
  5. 73's de Edd

    Low Voltage Disconnect 12V for NiMH battery 7.2V

    . Read . . . . . analyze . . . . . . . evaluate . . . . take your proper pick . . . . . . ...
  6. 73's de Edd

    Solvent to clean solder site

    Sir Zapper . . . . . If you had cap leakage of its internal electrolyte get onto a soldered joint, it could have permeated right into the actual solder joint or any solder residue. I remember some earlier Nichicon capacitors that would do that . . and leech their dimethylformamide carrier...
  7. 73's de Edd

    Comedy Thread

    . I thought that I had one of those in storage . . . . but it turned out to be the next version up, that is wedge shaped and also has its monitor en situ.. Looks like you will have to go for : http://www.ebay.com/sch/i.html?_nkw=power+mac+g4 And go to the ve r r r r r y last units in the...
  8. 73's de Edd

    Help repairing plasma tv 42pd5200

    " If there is anyone here that could help me with the use of my multimeter etc I would be very grateful" I thought that you knew how to, and were capable of taking resistance readings with that afore mentioned VOM . . . . . Either consult the internet for learning . . . . .OR . . . . . do...
  9. 73's de Edd

    Help repairing plasma tv 42pd5200

    Initially . . . . .ohm out to see there is a low resistance "short" between the Drain and Source of either unit , , ,and then check between all gate- drain- source possibilities. Looks like one is assigned a Q201 identifier and the other 220 . . . . .hmmmmmm . . .wonder why it wasn't a...
  10. 73's de Edd

    Help repairing plasma tv 42pd5200

    That's good on the GREEN LED . . .that means that the units standby power is operative . . . .and that also might tell us that the remote section and a hunk of its associative u/p circuitry is operative, if you can turn on the set with your remote. And yes . . .your Flag tells me you have 220V...
  11. 73's de Edd

    Basic help needed!

    Definitely . . . . . one half of a . . . . .Radius Shackimus board . . . . Can even be built into . . . an innovative city abode . . . . .
  12. 73's de Edd

    Replace fried range hood transformer with cheaper alternative?

    . Sir samaja. . . . . . . Question . . . .? I see that you opened that unit enough to expose the end Euro connectors. Is it also possible to expose and see the circuit board and its mounted components? Or is it potted up ? With this being a switch mode power supply design . . .and...
  13. 73's de Edd

    Help repairing plasma tv 42pd5200

    Sir portishead. . . . . . . Do any power designating LEDS on the sets front light up? Track down the AC line cord path going to a shielded line filter network and it exits as E902 connector which connects into a small PCB silk screened as . . . . ."FILTER". See if that boards F952 10amp/250...
  14. 73's de Edd

    Help with Sony slv-n750

    . Sir Andy. . . . . . . I certainly believe that the reason for your units failure is a gradual / progressive degradation of the capacitance of several of the electrolytic capacitors in that units switch mode power supply that runs front to back on the right top side of the unit. Basically...
  15. 73's de Edd

    Digital Tire Inflator unusable because of a spring/switch issue

    Sir Karthik316_1999. . . . . . . IN REVIEW . . . . . . . . Since you now have given us the switch current specs. If the sole fault of the Pump switch is its not latching on . . . .and that switch is basically a spring loaded temporary contact push button switch with its LATCHING on...
  16. 73's de Edd

    Digital Tire Inflator unusable because of a spring/switch issue

    Am afraid I do not have a proper setup/equipment to do that nor the expertise.. Is there a step by step guide that I can look onto ? If it stops, temporarily jump the switch contacts with the tip of a standard screwdriver, just long enough to see if it starts running again. Again, can you guide...
  17. 73's de Edd

    Lenovo laptop charger. Please Help.

    Sir Hexram . . . . . . . (Aaaaaayyyyy mate . . . . .that's one l o o o o o o o o n g - l o o o o o o o o n g trip to come up empty handed . . . . .and even having had to fight off the dingos.) The right of these adapters is the wrong one . . .being the USB . . . . the left one should be...
  18. 73's de Edd

    Digital Tire Inflator unusable because of a spring/switch issue

    Sir Karthik316_1999 . . . . . . . I see no fault with the domes on the tactile / Klixxon poshbutton switches above the LCD display unit. Referring to the very bottom photo: The LEFT of the *** push button switches is invariably being the MAIN power switch, while the right one is for the...
  19. 73's de Edd

    I Give up! SCR anyone?

    . Sir cjdelphi . . . . . . . Ahhhhhhh yes . . . indeed, they are getting much-much harder to find in the smaller 1-2-5 amp rated units . . . . and not all manufacturers have a very full offerings of ALL of those current ratings. What I do is go to...
  20. 73's de Edd

    Defective PCB/scroll saw

    . Sir KTW . . . . . . . From the transformer , 16volts AC (converts) to 16volts DC at the cap and 16volts DC at the regulator (is) coming out of the regulator at (/as) 5volts DC, both boards are the same. That statement above agrees with a perfectly normal power supply situation...
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