Search results

Search Forums New Posts
  1. 73's de Edd

    LG Flatron W2241S

    Sir Letifer . . . . . I'm afraid that " instrumentation " is but one technological step up from a test light, given its far spread out blocks of coverage. . . .BUT . . . we do now know that you have a main DC power presence. Can you get the loan of a friends DVM.? Would you rate your...
  2. 73's de Edd

    LG Flatron W2241S

    " my pre historic tool" . . . . . Give us its brand and model so that we can then evaluate its capabilities and limitations.. Do you have a battery powered pocket sized, transistorized AM radio . . . .or possibly a bit larger sized one . . .on up to a typical . . . .say . . .8 by 16 CM ...
  3. 73's de Edd

    Intercom replacement questions.

    Sir zrkd51 . . . . . . . . . . . After looking back at the photo of the new unit, and it's all encompassing view of its 4 clip tabs. It does indeed appear that the board can be swung out for inspection of its backside. A close-up photo of that side would reveal a lot to us. Sort of expecting...
  4. 73's de Edd

    Sony HT amplifier/receiver repair

    Sir onedog . . . . . . . (is enough) Page 13 of your schematics SECTOR D6 is where your dastardly deed is probably being collected and routed to. Your O/L protection circuit sensing area. Use DVM in DC voltage function, low range to monitor the base of Q731 and just see if any unwanted...
  5. 73's de Edd

    Intercom replacement questions.

    Sir zrkd51 . . . . . . . . . . . .qzxzr007 1/2 here . . . . . at your service Looks like you just have a loop in and loop out wiring arrangement. With the error probably being on your chosen bottom connector wiring connections. Log in / remember ? all wire colors to the bottom terminal...
  6. 73's de Edd

    Klipsch ProMedia 2.1 subwoofer circuit help

    Sires . . . . . . . Yeeaaaaaaaa . . . . . . "HOUSTON . . . . . . .We have recognition and confirmation of a LOW PASS filter's presence." However . . . you have to ignore quite a bit of that initial frequency plot due to speaker dynamics. It does not even come into play until encompassing...
  7. 73's de Edd

    Ceiling fan blades wont spin freely

    If bronze bushings instead of ball bearings . . . . .Gummed lubrication.
  8. 73's de Edd

    Wi Lite wireless lighting switch

    If that's 950k, no problem there.
  9. 73's de Edd

    LG Flatron W2241S

    Sir Letifer . . . . . If that is an actual photo of your unit . . .it looks like the far left 3 RED circled units were real losers. In the interim, before acting on the BLUES, what is the DC voltage reading across the main GREEN marked capacitor, when powered up ? By the look on your cat's...
  10. 73's de Edd

    Wi Lite wireless lighting switch

    Your 9V zener tests good so use it. With no power applied . . . .ohm from the + of the ORANGE assigned electrolytic filter to see how much resistance there is being to ground.
  11. 73's de Edd

    Klipsch ProMedia 2.1 subwoofer circuit help

    Sires . . . . . The unit is totally adequate for this situation and it is incorporating a low noise NE/SE 5532 I.C. I used to use these in preamps and you really can mike up and hear a mouse a peein' on a cotton ball. The Chinese wording is merely implying that this circuitry is...
  12. 73's de Edd

    PCB for Dishwasher repair

    . Sires . . . . . . . CJ . . .Can the ORIGINAL film resistor . . .guesstimated to be a 100 ohm unit . . . .be tested by the half / half method I described. As for the BLACKENED . . " Is this smoked " . . . . . .YES! . . . . . It is being a 0 .1 ufd monolithic block capacitor, thanks...
  13. 73's de Edd

    Klipsch ProMedia 2.1 subwoofer circuit help

    . Sir GuberX . . . . . The schematic which you came up is being fine, since it is both taking care of the combining of the right and left channel info to get a blended R+L to feed to the low pass filter at its initial input circuitry. Both the RED defined circuitry of the original unit and...
  14. 73's de Edd

    How to remove solder from plated-through holes?

    Sir Alec_t . . . . . . . Ultra low tech / no big " munney" expended . . . . . solution : Get a box of ROUND toothpicks . . . Now . . . .in ye olden tymes they were typically made of hardwood . . .nowadays they are more apt to be turned down bamboo micro skewers. (So much more the better ...
  15. 73's de Edd

    Help wanted on EL34 and 12AX7 tubes

    Sir usalabs . . . . Third reply . . . With something that you positively should relate to: If you don't breathe . . .you die . . .PDQ. Since those EL34's cathodes are direct to ground . . . . thereby with zero possibility of self biasing. If they don't have -45 volts grid biasing being...
  16. 73's de Edd

    Help wanted on EL34 and 12AX7 tubes

    This amplifier design has had an evolutionary transition in the output tubes that it uses. It started with an option of either using the metal clad 6L6 or curvy 6L6 . That then stepped up to the use of the straight side 6L6 GB. Then the upgrade to the 6L6 GC . . . .or its industrial . . . ...
  17. 73's de Edd

    Help wanted on EL34 and 12AX7 tubes

    Sir usalabs . . . . . OK . . . .then, try this, set up to INITIALLY monitor the voltage between B and C and then LOG the negative voltage being present there. Rapidly advance the bias pot to ascertain the max available bias and bring it back down to negative 45 if you are tubed up with EL34's...
  18. 73's de Edd

    Help wanted on EL34 and 12AX7 tubes

    Sir usalabs . . . . ( Not Brittania-labs ? ) This sounds like a classic case of output tube grid mis-biasitis. Let's use my markup test points for making some initial evaluations . Have proper speakers… hooked up to the proper terminals on the amplifier and then use minimum volume setting...
  19. 73's de Edd

    Klipsch ProMedia 2.1 subwoofer circuit help

    If you have that board that is shown in the picture, you are in business . . . do you ? 73's de Edd
  20. 73's de Edd

    Klipsch ProMedia 2.1 subwoofer circuit help

    Okay then, that is good to hear that you have an actual working unit . Instead of some unit which was given to you just because it did not work. I am now making the assumption that you do not have the units control portion . And with my making a further analysis of the units design I am seeing...
Top