Search results

Search Forums New Posts
  1. 73's de Edd

    Golf trolley/caddie 12v DC motor controller

    . Sir nyckuk . . . . . . . I'm gonna throw a couple of facts on that unit towards you, to see if it is helping your understanding of it. First, being the very easiest, is your not fully grasping the 2 wire versus 3 wire versus . . . . .even that 5 wire that some models are throwing at you...
  2. 73's de Edd

    help repair router adapter

    Sir pharaon . . . . . . . All of our prior attention was directed to the 4 FWB diodes, now in moving to the D5, D7 and D9 units, I have already explained the D5 circuit function. I reworked the foil path portion of the board just below, in denoting the positions of the D7 and D9 diodes...
  3. 73's de Edd

    help repair router adapter

    Sir pharaon . . . . . . . I only specified that BROWN wire, because I can see that one is coming in and connecting directly to the fuse on the PC board. Therefore we would have AC line power coming in, to initially pass through your incandescent lamp, and then the output wire of the lamp...
  4. 73's de Edd

    laptop power button

    Sir Johnspace . . . . . . . With your unit being a . . . . .MEDION AKOYA S6211T Laptop aka (MD98733) . . .with its 1 terabyte HDD Have I found the side of your unit, and is my assumption on the location of its power switch being correct? And if so, was the silver pushbutton cap really...
  5. 73's de Edd

    help repair router adapter

    . Sir pharaon . . . . . . . Thought process A . . . . . I am referencing to my post # 17 where I supplied tandem pictures of the board . . . one area that I caught that was in error was the diode, which we recently covered, that is being mounted flat on the board. That was being...
  6. 73's de Edd

    laptop power button

    AND a closeup photo of " what's being left of it" .
  7. 73's de Edd

    Speedy PCB production using an inkjet printer

    ( Behold . . . . my first and ever . . . CREATED . . . post. ) Sires . . . . . . . for your evaluation and comments: Speedy PCB production using an inkjet printer Rapid PCB production for prototype circuits is an old theme. A copper-clad board with a photosensitive mask and an etching...
  8. 73's de Edd

    help repair router adapter

    Sir pharaon . . . . . . . I didn't see you confirm that all four of the FWB diodes were replaced, as by my earlier comment of : If they are readily available to you, I would use four 1N4007 diodes. Save the two old diodes that are good and you can use them in the future, in circuitry where...
  9. 73's de Edd

    JVC AX-R551X PROBLEM

    . Sir Constantine. . . . . . . That is weird. why is then headphones volume correct ? It doesn't take much power at all to drive headphones. Clarify: The audio that is now coming from the speaker (s). Since I am being ~24,794 . . 7/8 ths kilos away from being able to HEAR it, is...
  10. 73's de Edd

    Technics SA-5760

    . Sir Gary88 . . . . . . . You r r r r r e b a a a a a a ck ! Your Simpson should suffice. Now . . . . . do you read "schematicese" ? You probably just have a problem with that left channel alone BUT with it secondarily affecting the other channel a mite , due to their...
  11. 73's de Edd

    JVC AX-R551X PROBLEM

    . Sir Constantine. . . . . . . Most Honnable apologies . . .as I initially didn't know the connector situation on those speakers of yours. Now I am knowing you have loose wires OR either loose wires with terminal lugs. Starting over again, and having a test audio signal into the unit, and...
  12. 73's de Edd

    JVC AX-R551X PROBLEM

    . Sir Constantine. . . . . . . OK lets go this testing route, IF you are able to hear your audio good through both channels with the headphones, but the audio from the speakers is being weak. Note that the ground connection of the J901 headphone is a good common ground point for both the...
  13. 73's de Edd

    LG Flatron L1942T-PF monitor no power

    Sir mikey5791 . . . . . . . It seems like the IC at U101 being LAF0001 needs a replacement; which is not easy to get at our part of the country. I have checked the local store but they do not have it. Have you checked for its real Fairchild part number of FAN7601. I was surprised with how...
  14. 73's de Edd

    JVC AX-R551X PROBLEM

    . Sir Constantine . . . . . . . Yes headphones work fine. That makes me feel even more that the power amplifier section is not working correctly. The headphones get their drive from the SAME speaker drive line. With only a variance of inserting some series resistors in their feed line...
  15. 73's de Edd

    Amp keeps going into protection mode

    . Sir Rick 79. . . . . . Then remove the jumper and proceed with the sequential trying of the shunting of 100 ufd of capacitance across each of my mentioned capacitors, trying it, one capacitor at a time. 73's decision Edd .
  16. 73's de Edd

    Amp keeps going into protection mode

    . Sir Rick79. . . . . . . Good show ! What with that cap meter not working for you, that replacement is about the only way to know, when you are dealing with the equivalency of a non polarized electrolytic. Did you ever get to my mention of establishing the cut out point with establishing...
  17. 73's de Edd

    JVC AX-R551X PROBLEM

    . All Hail . . .the Great and Mighty . . . . .Constantine R788 voltage betwee(sic) C and D is always 2.5mv no matter the position of R752 That's telling us that there is no great voltage disparity between the same value emitter resistors of the NPN and PNP power output transistors on both...
  18. 73's de Edd

    JVC AX-R551X PROBLEM

    . Sir HellasTechn. . . . . . . WHAT . . .No one wants to help you . . . . .? After you spending all of that money for those semiconductors . Is my schematic different from yours . . . .as those bleeder resistors across the main power supply are 33k vice 330k . Will the amp drive...
  19. 73's de Edd

    Help fixing old walkie talkie

    Sir ATA . . . . . . . Got the book, after dig-dig-digging but can't digitalize its info until a day or so after our Amerikanski Memorial day. 73's de Edd
  20. 73's de Edd

    Finding antenna on key fob

    most of the power would be diverted to the inbuilt helical antenna. Tell us what your systems problem is.
View older results
Top