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  1. OLIVE2222

    Making an FM Transmitter

    Hi Vincent, You can use a BC547 or a 2N2222 or similar for the transistor. For the inductor 6.8µH will be to high, the BOM state 0.1µH, you can easily made the inductor yourself with a piece of rigid electrical wire of around 1mm of diameter Olivier
  2. OLIVE2222

    Opening door from PC

    Hi, Plenty of RS232 and USB relay boards are available on Ebay http://www.ebay.com/sch/i.html?_from=R40&_sacat=0&_nkw=rs+232+relay&_nkwusc=rs+232+relaay&_rdc=1 Olivier
  3. OLIVE2222

    Electronic Door Activated Socket

    Hi, yes that's a good model of push button. For the wiring it' s all depend of the existing installation and if you can easily add wire in the existing tubing or add a new tube or....better to check that locally with your electrician friend, and yes working on the main voltage must be done...
  4. OLIVE2222

    Capacitor replacement advice

    @Steve, I agree that giving remote repairing advice is not advisable here. However I fill that trashing a TV for few bad caps is bad for the environment (and the wallet). so a "statistical" (according to experience and google results on those TV's) repairing by replacing the caps worth the...
  5. OLIVE2222

    Capacitor replacement advice

    The capacitors storing the higher voltages are on the Hot side, see indication on PCB and on schematic. You can safely discharge them via a 470 ohms/ 2 watts resistor connected on alligator clips. The voltage rating written on the capacitor is a good indication of the maximum voltage you can...
  6. OLIVE2222

    Capacitor replacement advice

    OK the PSU is on another document http://fileshare.eshop.bg/downloadsm/61230/Samsung_LE32A559.html ICM801 is a MC33067 Olivier
  7. OLIVE2222

    Capacitor replacement advice

    the service manual is here http://www.electronica-duartes.com/upload/do.php?filename=manual-servico-tv-lcd-samsung-ln26a450c1d.zip but the PSU is not documented Olivier
  8. OLIVE2222

    Capacitor replacement advice

    Indeed they can look normal and be broken. They are more prone to fail when they are close to a heatsink. So replacing the 4 bottom left one and the the 2 at the right middle (pic 1876.jpg) can be a good start! You can go for this Panasonic serie...
  9. OLIVE2222

    ID diode

    Hi, Without any marking the reference is almost impossible to find. The package is a "rugged" type used in harsh environments. What you can do is to draw a partial schematic by following the PCB traces of the concerned area (reverse engineering). With this schematic we can probably help you...
  10. OLIVE2222

    Electronic Door Activated Socket

    No, what you need is a momentary push button, not an ON/OFF switch who lock the contact. Olivier
  11. OLIVE2222

    Capacitor replacement advice

    Capacitors looks OK. Did you check the fuse (located under the code bar)? Olivier
  12. OLIVE2222

    Custom Doctor who Sonic Screwdriver component Help!

    Hi, The solution closer to your need is probably a sliding potentiometer connected to an oscillator circuit. Olivier
  13. OLIVE2222

    Question about components

    You can use a MAX4426 from Maxim for the driver (they generally offer free samples) The XR2211 don't have equivalent as i know. Note that Mouser (and digiKey) are fast 2-3 days from US to Europe and online ordering is somewhat the way to go those days. Olivier edit:the NJM2211 (JRC) is a...
  14. OLIVE2222

    Wind turbine dump control

    here a start :http://www.reuk.co.uk/Wind-Turbine-Charge-Controller.htm Olivier
  15. OLIVE2222

    Electronic Door Activated Socket

    Hi, You need a normally open push-button compatible with the main voltage and a bit of mechanic to adapt it to the door. It's to be wired up like any switch-bulb circuit. http://www.electricaltechnology.org/2012/11/how-to-control-lamp-by-single-way-or.html Olivier
  16. OLIVE2222

    Question about components

    Hi, The 1N5281 isa 200v 0.5W zener, you can use a 1.5W (more bulky) Z4KE200A-E3/73 one available at mouser or any serial combination to reach 200v The TC4426 is available at Mouser The XR2211ACP-F is available at Mouser Olivier
  17. OLIVE2222

    Capacitor replacement advice

    Hi, The black trace are not coming from the caps, they are just marker trace done for any reason at the factory. Cap can have they top "poped" or have visible leak (almost transparent colored) or be dryed (no visible sign). Electrolytic capacitor is a common failure on TV's, can you post...
  18. OLIVE2222

    Capacitor replacement advice

    Hi, The color doesn't matter, however the temperature range and the ESR does ! better to find out the installed cap datasheet and to buy capacitor with (almost) the same ESR. Also don't buy chinese stuff on Ebay but go for brand like Panasonic on Nichicon at Mouser or Digikey. Olivier PS...
  19. OLIVE2222

    Mial Cap Codes

    Hi, Normally the letter stand for the precision see http://www.sentex.ca/~mec1995/gadgets/caps/caps.html fig.2 so 1200J = 1200pF 5% Olivier
  20. OLIVE2222

    Detecting water level and pumping it out

    Hi, Because of the boat rocks you can may be thing differently. Wht don't start the pump on regular basis (let's say 5' a hour) and check the water flow at the exhaust pipe with something like this http://www.adafruit.com/blog/2012/05/09/new-product-liquid-flow-meter-plastic-12-npt-threaded/...
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