I have isolated my problem to a part no one has ever heard of, the"focus screen module". It is a box with 6 turnable knobs that focus the image on the RCA projection TV. the part has a S3 location#(supposedly) and is located under front speaker screen behind front access panel which is between front speakers. Once access panel is off it is on righthand side. can someone tell me where I can get replacement or interchangeable? part# on sticker attached to mounting surface with diagram is 15165410. An internet company said 15414390.
the TV'scomplete service # is p52927yx10 Thanx in advance
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Possible worn out tube. The focus adjustment is on the flyback transformer and has to have the back cover removed to access it. The flyback will be a black and have a red wire connecting to the crt tube. This is very high voltage and can be dangerous. With a plastic screwdriver you can turn the focus adjustment knob on the transformer. Do not adjust the screen control knob. If the focus does not clean up, then the tube is probably worn or the flyback is bad.
This kind of symptoms can be correct by the focus adjustment at the flyback transformer. FBT mostly has two control knob (Focus and Screen), focus is usually at the top one like in the sample picture below.
Open the back cover of your unit and then locate the FBT. Power on the unit and try to adjust the focus knob.
If the symptoms can't be cured by the this step, this is an indication that the CRT socket is already faulty. You have to replaced this parts and then make some adjustment at the focus knob of the FBT and your unit will back to normal again.
CRT(picture tube) socket
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Never heard of this telescope. However take it outside during the day time and practice focusing on a distant object. Put the eyepiece with the largest number written on it into the focuser. DO NOT use the 2x barlow if you have one. Turn the focus knob left and or right until you get a sharp image in the eyepiece.
the lens has a wingnut knob on it, loosen the nut and then rotate the thing to focus in and out. there is also an electical focus in the front of the tv, there is a little black box called a focus block, 6 knobs , 3 focuses for each tube, 3 drive controls (screens).. dont turn the screens, just the focus for the color needed.. look closely they are labeled its just hard to see the front should pop off, remove what screws you can find, the rest are snaps.. really tough ones.. let me know if you need further assistance.
behind the speaker grill open up the access panel look for the focus block - it has 6 knobs, labeled very small and hard to read, r, g, b - focus and screen -dont move screens unless you need to change the drive of the crts.
there is also a wingnut (mechanical) focus knob on each lens, dont move unless electrical focus doesnt work
Adjust Screen Volts (G2) of all 3 picture tubes and screen volt control knobs are on focus block located under speaker grills at front of TV. Remove speaker front grille of TV, look for focus block that has 6 control knobs, 3 knobs are for focus and 3 for screen volts, increase volts by turning little bit control knobs of screen volts and this will solve your problem.
I hope that you have unplugged the range from the wall... Until this is resolved, you need to remove power from the stove. Use a lighter (long nose type is best) until this is corrected.
To identify the exact cause, you will need to expose (one at a time is ok) each of the contacts assoicated with the burner control knobs.
Each burner control knob has a setting (ignite) that closes a set of relay contacts and allows the igniter transformer to fire all of the spark-gap igniters. Since they all "spark" from any knob, you must isolate the knob that has the short circuit in it.
So do the following: (WITH THE POWER PLUG REMOVED FROM THE WALL....)
1. Expose the back side of a knob.
2. locate the press on wire on that knob.
3. Remove that wire from the know and place it on a piece of paper toweling (to isolate it from any metal).
4. Plug the stove into the wall and listen for sparking.
5. If NO sparking is heard, you have located the bad knob. If spark IS heard, unplug the stove and restore the wire. Move onto the next knob.
6. Repeat steps 1 - 5 until the spark does no appear.
7. Repair or replace that faulty knob assembly.
First check what color of faint lines comes then reduce Screen Volts in TV of that CRT (tube) Take off lower front cover, speaker grille of TV, there you will see focus control block that has 6 control knobs, upper 3 knobs are focus adjustment of red-green-blue CRTs and lower 3 knobs are screen volt controls for red-green-blue CRTs. Turn screen volt control knob CCW to reduce screen volts of desired CRT. Put TV on any free AV input so screen will be dark enough to adjust screen volts. Thanks.
the controls for focus adjustment are on the flyback transformer, (that big black thing on the left hand side (usually) of the monitor with the thick red wire that goes to the CRT.) the flyback may have 1,2,3 or even 4 knobs on it. 3 of these would be labled SCREEN (bottom knob of flyback. handles brightness)
FOCUS 1 + FOCUS 2 (focus adjustments. these are what you need to play with) and the 4th knob (some old mitsubishi workstation monitors had these) i do not know, it wasnt labled and HV adjustment was on the deflection board