Search results

Search Forums New Posts
  1. 73's de Edd

    I need help indentifying a component for an old CRT TV

    Sir Arian. . . . . . . You made the almost fatal error of neglecting to give the units model number . .I picked a probably similar KVES29M90. Your units model number is being BADLY needed. See if you can track down this YELLOW RECTANGLED . . . . . . . BLUE marked . . . . resistor and see...
  2. 73's de Edd

    Old expired '83 brain needs rework

    Sir tedstruk . . . . . . . How far would the assumption be off . . . that this is being your olde tyme Yamahauler V15 unit ? This was someones concentrated effort on the associative areas of a starting problem, but we can certainly use it for its OTHER information. Directing attention to...
  3. 73's de Edd

    Distorted audio on an old transistor radio cassette

    Does this unit have other on board source capability . . .like FM radio or is it being a tape player also. Either of those two other sources present a different audio input signal ..
  4. 73's de Edd

    Volume knob, Roberts radio, intermittent failure

    While you are at it also note all of the BLACK SILVER OXIDE on the terminals. BUT mainly the two little knife edges that make the switch action when the phenolic eccentric cam moves away from the off position. A very-very-very light scraping of those contact areas would be in order,just...
  5. 73's de Edd

    Zener Diode - I feel terrible!

    How did you get from a relay board . . . . . all the ways to this . . . . and not even give this equipment's Brand and Model number ?
  6. 73's de Edd

    Distorted audio on an old transistor radio cassette

    You might try it .
  7. 73's de Edd

    Distorted audio on an old transistor radio cassette

    I cant see the odds of 2 220s and 2 330s all being bad. Possibly the radio was then trying to work normal then, but might have been confronted with that extra power pull pulling down a marginal 9 V battery beyond its capability, Considering that this was a battery powered test vice AC power...
  8. 73's de Edd

    Why is my relay bank not working?!?!

    Clarification . . .as per . . . . Over at the relay proper, it is receiving 12 VDC into its coil with the other terminal of the relay coil going to the collector of the driver transistor. The sensor portion of the secondary of the optical isolator is wired in series with a select value...
  9. 73's de Edd

    LED lamp isnt working, but want to try fix it!

    This was being a single add on to your LATEST post . . .but since . . . IAN has moved here to unitize all prior replies . Sir Dylan Lie . . . . . You didn't quite give totally overall encompassing photos, but I can make out that the LED display panel is divided up into two series LED...
  10. 73's de Edd

    Eico 902 audio analyzer manual & ?

    Yah . . . . . ive dun been gottink its. Click on this hot link below . . . . .and then run like hell . . . .since we dont know EXACTLY how BIG that PDF ended up being ! http://bama.edebris.com/download/eico/902/Eico 902.pdf After your 15 second wait . . . . . .or muuuuuuuuch longer . . ...
  11. 73's de Edd

    Old expired '83 brain needs rework

    Sir tedstruk . . . . Working with your given info . . . . this unit is getting its working power from 12VDC . . .batt? . . . voltage. Most other cycles rely upon an additional stinking parasitic winding on the magneto. Is a motorcycle schematic of the wiring going to these side connections...
  12. 73's de Edd

    Why is my relay bank not working?!?!

    Sir Boyd . . . . I also noticed the right side jumper clip, but the photo coverage didn't clearly show that area well enough for me to be able to ascertain its function being achieved. I CAN easily see that there is a back emf diode across each relay coil and 1 driver transistor for each...
  13. 73's de Edd

    Distorted audio on an old transistor radio cassette

    Possibly your ,used, substitute capacitor could be shorted or very leaky. Do you have another one to try, or even possibly another one, that is even down around the 330 or 220 microfarads range . Also, be absolutely certain in matching LIKE polarities to each other. Almost universal marking...
  14. 73's de Edd

    Old expired '83 brain needs rework

    Sir tedstruk . . . . Is this not being your unit . . .just being less all of its ancillary plug ins. And do you say that after removing the 4 corner screws, that a board with all of its components is not visible . . .OR . . is it showing to be a totally potted unit ? This must be your other...
  15. 73's de Edd

    Why is my relay bank not working?!?!

    Sir boyd . . . . . MAN ! . . . . .dat's CHEEEEEEEP . . . . and it still EASILY exceeds your boards power requirements, with all of its 4 relays being activated . Initially your photo does not give referencing to the polarities of the + and - terminals of the power supply to the left. Assuming...
  16. 73's de Edd

    Need help with an old CRT TV

    Sir Ivan Ujkić . . . . . . . WOW . . . . how does anyone in those dusty environs, and their lungs taking that in . . .not be having some serious long time respiratory problems. There are some circuitry points that you DO NOT want that residue being across connections. Your second photo down...
  17. 73's de Edd

    unbiased portion of transistor

    Sir chet . . . . . . I was busy transferring the resistor values from your schema to the other one that I had found and was then just basically consulting his schema on that made observation. Its common design fare to use either a digital stream or a simpler single unijunction transistor to...
  18. 73's de Edd

    Comedy Thread

  19. 73's de Edd

    Yu Fong YF-600 schematic

    . Ehhhhhhhhhh . . . . . Senor Miguel Lopez . . . . . . ¿ que paaaaaaaaaaaaaaaaaasa ? Well since you have the manual, you can make out the fine print number designations and R assignments. Let me just roughly reference its aspects and you relate and read the numbers. As for any...
  20. 73's de Edd

    Dell monitor sometimes dead (E2210H)

    For the benefit of others . . . . How about either of you that have open viewing access . . . . .passing the capacitive and voltage rating of that unit and its assigned Cxxx designation. I can make out the C4xx assignment towards the U/P but the nearby power regulators suggest a C7xx...
Top