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Re: looks like 3 in 1 oil spilled on circuit boards
I would not recommend cleaning with water, however, if you do clean it with soap and water the board must be immediately dried with dried compressed air.
Any components that moisture can enter, such as unsealed adjuster pots, open variable caps, inductors etc must be avoided. When drying, pay particular attention to area under ICs and SMT components. In can be near impossible to remove all moisture from under these components. A bake in the hot sun for a few hours also helps to eliminat the moisture.
I think a preferred method would be to use a volatile inert solvent to clean the board.
Various commercial PCB cleaner fluids are available from electronic wholesale component suppliers. The board will still need to be dried with compressed air.
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The old fashionedway to stop squealing was simply dish soap.wipe the belt thoroughly. Use chalk to to show where you stop and start. You need to crank it after you do one section at a time. Disconnect distributor so it doesn't start. Do not try while running!I should have added, use soap full strenght
When you have a remote control that is not working properly---works but some buttons either do or do not work correctly the most common cause for this is something got spilled on the front of the remote--it does not have to be a large amount to cause problems.
The way all infrared remotes work is there is a circuit board inside with black carbon lines etched on it---this includes lines for each function the remote has.
The buttons on the outside of the remote are actually one large rubber like mat and on the bottom side are coated black buttons---when you press a button on the keyboard the button part on the bottom of the mat touches lines on the circuit board and directs the remote to send a infrared signal to the unit it controls.
In this situation you have two choices:
1.) Most remotes can be taken apart and cleaned for this problem--I have done hundreds of them.
a) Once you get the remote apart (the hard part) the rubber mat should lift freely off of the circuit board---if you have to peel it off and feel resistance you will see whatever residue of what was spilled and got under it; it gets between the mat and the circuit board.
b) The surface of the board where the lines are can be cleaned with denatured alcohol.
c) To clean the mat: remove it completely and with a small toothbrush and dish soap gently wash it in the sink with warm water. Then dry it with compressed air or a hairdryer set to air only. When it is COMPLETELY dry put it back into the face of the remote.
d) If there was a spill into the remote it is also a good idea to clean the face of the remote where the buttons protrude and dry it completely before you put the mat back.
e) Put the remote back together and see if it now works.
Your second option is to borrow another remote for the same kind of unit and see it works normally--if it does and cleaning does not fix the original remote--YOU WILL NEED to buy a new original remote for the unit.
I stay away from "Universal" remotes as many either will not work or be missing several features the original one had.
If a KNOWN good remote does not work it is possible but very unlikely that the problem is in the unit the remote conrols.
See attached photo of a typical remote taken apart--note the lines on the board and the bottom of the buttons on the keypad.
Neverclean the bottom of the buttons with anything except soap and water asany chemicals can damage the black conductive coating on the bottom ofeach button--it will not hurt the lines on the circuit board!
Like all water damage on electronics, it is critical to do the following right away: (1).Remove the battery to slow down the corrosion process. (2). Have someone remove the case to expose the circuit board. (3). Assess the damage. It's easy to see where the water/moisture is as you should notice a whitish/greenish deposit at the spill site.
If it's minor, you might be able to clean the damage and resume operation. Good luck, hope this helps.
The crt fluid needs to be repalced carefully and correctly...This is why we created step byt step instructions for our kits on our website www.TvRepairKits.com . In msot cases if you cleaned up the spill before powering up the tv would be fine....but its not always easy to get all the spill off the board.....look around and see if you find any burnt parts....if so post a photo here....
If water was spilled in it, the batteries should have been removed immediately, if you could remove the circuit board from the casing, dry it off and place it under a lamp for a few hours it should have been perfectly fine. If a soft drink, sugar base or other substance was spilled in it; the board would need to be cleaned, a small amount of soap and water can work, use a cotton swab, only clean the affected area of the spill, make sure to rinse all the soap off, dry with towel, then place under a lamp to get all the moisture out. Also make sure you clean the bottom side of the buttons that contact the circuit board. If it doesn't work then you may have to buy another unit.
Read Each Step Completely - Make Sure 3 Color Guns Are Off And Cool - ---------------------------------------------- 1. Remove Rear Dust Cover
2. Remove the Front Speaker Cover May be Held In By Plastic Pins and or Anchors on the Bottom Note" - Remove The Plastic Cover Just Above Speaker Cover Maybe 2 Piece.
Remove The Screws Holding Top Of Speaker Cover. Then Pull Toward You the Bottom Maybe Anchored So Lift Up.
4.Once Speaker Cover Removed, May Have Screws Just Below Center Plastic Cover Remove Them, Now Remove Center Cover Between Speakers -NOTE" Do Not Touch, Move Any Color Convergence KNOBS" - Lift Front Screen UP - Towards Roof - It Has 3 Flex Grab Anchors On Top And 2 Pins One On Each Side Of TV Frame. - NOTE" Lay Screen On Floor It Is Plexi Glass So It Will Brake If Bent Or Drop Hammer On.
NOTE"- May Have To Remove plastic Cover Frame positioned Around Front Screen And Then Remove Screws.
5. I Use Windex Glass Cleaner And Either Cotton Balls Or White Tube Sock On Color Gun Lens Covers And Clean Mirror Like The One In Bath Room.
6. Take White Sheet Or Bead Spread And Anchor On top Of TV With Weights, Stretch Around Each Side Of TV Use Chairs To Anchor On Each Side Of TV. Place Dust Cover Or Heavy Card Board Where Plexi Glass Was Positioned.
7. Turn On TV - go To Rear and Now You Can Adjust Colors Brightness And Low Light - High Light - Horizontal - Ect....While Looking at Picture.
8. Install In REVERSE - Order Just Wipe Color Guns Lens Last. Note" - If you have Wet/Dry Vac or Fan Or Blow Dryer Take A 2 - to - 3 Inch Paint Brush And While Brushing Circuit Boards Any Dust For That Matter Blow Dust Off And Out Even Brush Speaker Cover"...ECT...Do This Before Any Cleaning
9. Just A Thought If You Ever Want to Change Color Gun Cooling Oil - Wrap All Circuit Boards With plastic Bags And then I use Bath Towol And Paper Towols To Catch As Much Spill As I Can And Then Spray With Windex To Make Dry While Blowing Air Onto Spill - Also I have Found Clear Mineral Oil Like Johnson Baby Oil To Work As Well If Not Better Then Glycol Oil. I Get For $2.50 For 20 Oz Bottle.
The coolant in the CRT's is made up of 70% ethylene glycol and 30% glycerin. The coolant is highly conductive and somewhat corrosive. Since you already tried to turn it on im not sure but hopefully you wiped it up first. Take some 100% denatured alcohol and use that to clean the spill you can just pour it on and wipe it off with the set unplugged of course. then let the remainder on the board evaporate (It evaporates very quickly when open) and repeat the process. if your lucky and it did short the first time you turned it on the fuse just blew.