Hi Louis Louis you were wondering where the moisture on your receiver come from? The same place the due on the grass comes from, or the moisture on the mirror after a shower. If you cool off the receiver and then put it in a warm moist area the moisture in the air will condensate on the receiver shorting out the high impedance circuitry. (reason your glasses fog up) When you leave your aeroplane in the trunk of your car in and the temperature drops to 40 degrees at 5 AM in the morning the receiver has cooled all night and it takes time to warm up in the morning. The sun then increases the temperature at sunrise fast, and the moisture forms on all cool objects like grass, or Xmttrs or receivers in car. This can happen in the house also if the above conditions occur. Most electronic equipment used outdoors is sprayed with Conformal Coating which prevents the circuitry from getting wet, yet has a high enough impedance when dry that it does not effect the receiver operation. Acrylic Varnish could effect the receiver operation, if you have a problem after varnish it is for this reason. Conformal coating is used as the insulation resistance is high enough as not to effect the circuitry. I suggest you dry out your receiver and keep the plane in a warm dry place so these condition do not occur. Use Denatured Alcohol It would be interesting to find out what the other RC manufacturers are doing to there receivers and transmitters to prevent this condition. I think they assume RC equipment is indoor stored equipment. I had my camcorder stop in Calgury because of this condition. I took it in the motel every night after that. Happy Landings Glenn On Tue, 05 Sep 2000 21:25:32 -0400 Louis Cimon <[EMAIL PROTECTED]> writes: > Hi, > > I recently had problem with a D.A.D. Blade > receiver I used in EPP planes: > > It sudently stopped receiving for no apparent > reason. I examined it and found that the white > protecting material inside the case had a curious > felle like it was humid and I found some light > corrosion on the PC board. This receiver was never > exposed to sea water it was always at least 50 > miles from sea water ... > > It was never exposed to direct water. > > I simply brushed the board with a toothbrush. I > suppose this board was not protected with a good > sealant. I already have a good pc board spray > acrylic varnish that I used to protect circuits I > built and used in harsh environments. > > Here are my questions: > > Is there a treatment I should do before spraying > it with my spray (using a special cleaning > solution, protecting certain components from the > spray, etc)? > > Is D.A.D still in business? > > What is it's URL? > > > Thank You very much > > -- > Louis Cimon > [EMAIL PROTECTED] > 141 rue Mistral > www.mediom.qc.ca/~lcimon/planeur.htm > Beauport, QC tel : (418) > 664-1023 > Canada > G1E 5V4 > RCSE-List facilities provided by Model Airplane News. Send > "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
