My robertshaw thermostadt went blank and replaced batteries still blank screen. I discovered that tab on bottom of battery connect was flat and not letting top end of aa batteries make connection so I put aluminum foil piece at negative end to push batteries against terminals. Is this okay.

One of those ends for the connection should be a spring and the other should be a tab. make sure the spring side is on the flat end of the battery, it pushes the bump on the other end into the tab in the battery holder.

The LCD flex connector is very sensitive. 4/5 of the RAZR screens I see go out are due to a loose flex connection. It's super easy to fix it. Take off the battery door. There are two T6 screws. Take them out and pop off the bottom of the phone. There are two flex cables: one for the keypad, the other for the screen. Connect the flat cable (screen cable) first. Then connect the bent (keypad) cable. Put back together. Voila.

Hi,
You are not getting the 24v power from the furnace...
Either the furnace power is off... the 24v transformer went bad...
or there is a fuse that blew which is interupting the 24v power from the trnasformer...

The blank screen in other words is an indication of amuch larger problem...
you need to find that power problem and fix it...

ere is a tip that will help you try to figure out why your furnace is not working.

Basic Furnace or Heating System Troubleshooting

heatman101

Turn the PSP off and remove the battery and battery cover. Remove the two screws underneath the battery. Remove the other two screws on the opposite side of the battery. Remove the final screw on the bottom edge of the PSP.Grasp the PSP on both sides with each hand and pull the cover off of the PSP. Locate the button bar on the bottom front of the PSP. Use your flathead driver to lift up the left side of the button bar until it pops up off the LCD support. Lift the button bar cable tab upwards to remove the cable and remove the button bar.Insert your flat driver into the small space on the left side of the LCD screen between the the LCD housing and the LCD mounting bracket. Twist the screwdriver slightly and the mounting tabs will pop out. Gently remove the other side of the LCD after popping out the first side tabs. Bend the PSP screen all the way down until you can see the backside of the screen.

Lift up the flex cable connectors and unhook the cables that connect the screen to the PSP motherboard. The tabs are brownish in color; they are very fragile, so be gentle. Lift the PSP screen out of the housing and place to the side.Place your new PSP screen into the PSP, face down like you had the older screen after popping out the mounting tabs. Connect all of the cables from the PSP screen into the motherboard tabs. Fold the screen back into the bracket, snapping it into place. Place the button bar back onto the LCD support, connecting the last cable. Place the cover back onto the PSP and tighten screws to finish.

Hello,

You may have to force the calculator to boot up. Details are in the article . Read the part on Ti83Plus family.
The article contains links to additional articles.
Hope it helps.

but the battery is still dying.

Hi,
ManualsBack to Contents Page
Display Assembly and Display LatchDell Inspiron™ 6000 Service Manual
Display Assembly
Display Bezel
Display Panel
Display Latch

Display AssemblyRemoving the Display AssemblyCAUTION: Before you perform the following procedures, see the safety instructions in the Product Information Guide.NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer.NOTICE: To avoid damaging the system board, you must remove the main battery before you begin working inside the computer.

1. Follow the instructions in "Preparing to Work Inside the Computer."
   
   
2. Remove the hinge cover.
   
   
3. Remove the keyboard.
   
   
4. Open the display all the way (180 degrees) so that it lies flat against your work surface.
   
   
5. Remove the four M2.5 x 5-mm screws (two on each side) that connect the display assembly to the computer.
   
   
6. Loosen the screw that connects the grounding wire to the system board.
   
   
7. Use the pull-tab to disconnect the display cable from the system board.
   
   
8. If a wireless Mini PCI card is installed, disconnect the antenna cables from the card.
   
   
9. Lift the display assembly from the computer.