How to keep the voltage screws in place safely

SOURCE: screen tuens blue them tv turns off

NOT GOOD NEWS... IT SOUNDS LIKE YOUR BLUE CRT IS SHORTED. THE ORIGINAL PART IS N.L.A.(NO LONGER AVAILABLE) THEY DO MAKE A GENERIC REPLACEMENT, BUT I DON'T THINK THEY ARE AS GOOD AS O.E.M.
YOU CAN TAKE OFF FRONT OF T.V. AND ADJUST THE SCREEN DOWN ON THE FOCUS BLOCK. IT IS THE BLACK BOX WITH 6 ADJ. ON IT 3 ARE FOCUS. 3 ARE SCREEN . TURN THE BLUE ALL THE WAY DOWN , THEN WITH THE BACK OF A PLASTIC OR RUBBER SCREWDRIVER HANDEL YOU CAN TAP ON THE NECK OF THE CRT, NOT TO HARD. SOME TIMES YOU CAN CLEAR THE SHORT OUT OF THE CTR. IF THIS WORKS LET THE SET WARM UP FOR 10-20 MIN. THEN TURN THE COLOR ALL THE WAR OFF, THEN SET THE BLUE LEVER UNTIL YOU HAVE A GOOD BLACK AND WHITE PICTURE. BE CAREFUL NOT TO TURN IT UP YOU CAN DAMAGE THE CTR IF THE LEVEL IS TO HIGH. ERROR 8 IS A.K.B. ERROR THAT MEANS THE CRT'S ARE DRAWING TO MUCH CURRENT.
DON...

SOURCE: convergence problem

did you try to do convergence thru the menu system?

SOURCE: Blue spots on Sony High Definition 41 inch tv.

There are tiny screens at the top and bottom of the lightbulb (XL2200) that allow air for cooling over the lightbulb. It appears that if air flow is restricted the heat is not able to escape. The light source is in direct proximity to another mirror like device called the integrator lighting system polarization changer element. This may have gotten a little hotter than normal and is changing how the light is passing through to the tiny LCD's which make up the light engine. Creating the small areas of lavender light we are seeing.
I myself have replaced this bulb and now will check every months to vacuum the dirt off the tiny screens.

SOURCE: Remove Speaker Grille from Sony KP-65WV700

So you got the six screws undone, great! Now you can pop off the front speaker grill. The easiest way is to work your hand along the top and bottom to pop the plastic out of the "holders"

If what you are describing to me is the main wires still attached to the rest of the TV. So don't pull it out too far! If you do it right you won't have to unplug the wires, and save yourself some hassle... with this TV you'll have to pull it out JUST ENOUGH to get access to the carboard/masonite backing, removing such will give you full access to the six controls.

Adjust from there! Sorry for the wait, and I hope this helped out!
:)

SOURCE: removing the front panel -bulb replacement

There is no other screws other then at corners at back of TV that you have already removed/ loosen.
Please pull lower front from its top corners as its lower part has hooks with bottom of TV front.
Below image will help you to remove front panel for lamp replacement in this TV..
Thanks.