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Focus not sharp

Can i internaly adjust the focus without disturbing the c.r.t.s . and what is the procedure. also how do you remove the front speaker grill thanks jeff

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Yes, you can adjust the focus of the CRTs without causing other issues if you exercise some care in the process. There are two types of focus adjustments in your TV, electrical and optical. The electrical focus is more likely to change over time than the optical focus. That's because the optical focus is mechanical and would likely only need adjusting in the event of a CRT replacement. The electrical focus controls are located behind the front speaker grill and the front access panel. Pioneer TVs will either have pop-on/off connectors where all you need do is grab and pull, or it may have a few philips screws securing the grill. The screws are generally hidden behind the plastic molding strips just above the grill assy. (they are snap on/ pull off) There will be a small, black control assembly located behind the access panel. There will be 3 focus controls and 3 screen controls. The screen controls adjust the intensity of each CRTs brightness.

Good luck!

michtech

Posted on Feb 16, 2009

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3 Answers

Sony 1292 - the red tube seems to always run at full output. There is a most distinct red cast to everything. When the projector is idling, with no input present, the blue and green tubes barely glow,...


remove front bottom panel and turn RED screen drive down it will be on your Focus/screen drve control block 3 controls on top for focus R/G/B and 3 below for screen drive to tubes R/G/B

Dec 07, 2009 | Televison & Video

1 Answer

Sony rear projection tv model KP-53V15 turns on, have sound but no picture, after a while, picture comes on, but later goes out again, picture keeps coming and going. Where do I start looking?


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.

Nov 02, 2009 | Sony Televison & Video

1 Answer

Poor pictre quality


This set has 3 CRT's (picture tubes)
Remove the back bottom cover
Clean the CRT's with windex and a soft cloth.
(Find the Screen/Focus block)----Remove front grill cover and panel which covers the Screen/focus block.
Cover 2 crt's and adjust the focus control for remaining crt---(using the convergence pattern in the menu for the set)
adjust for the best focus.
cover that crt and move on to the next crt using the same procedure.
After setting the focus on all 3 tube's you will have the best focus possible for this set. If picture is still bad, you have bad crt's and the set is junk.
Cost to replace the CRT's is enormous!
Craig

May 08, 2009 | Televison & Video

1 Answer

Is there a Magic Focus function on 53XDF01B?


The correct model is 53fdx01b. There is a mogic focus button on the front of the set. Procedure for Chassis DP05F, DP05, HP11, HP12:
1. Press and hold the DIGITAL ARRAY or CONVERGENCE ADJUST button on front panel.
2. While the button is held down, then press the INPUT or ANT button on remote control.
3. The unit will now be in the DCAM.
NOTE:
1. Proceed with digital convergence adjustment.
2. Remember to save the correction data.
3. Units with MAGIC FOCUS only - Failure to initialize MAGIC FOCUS sensors after saving
convergence correction data will result in a STATIC (+) display when MAGIC FOCUS attempts
to run. The technician will then be required to access the service only switch behind the front
cover to get back into the DCAM to initialize the sensors, since the procedure to access DCAM
without removing the front panel, requires MAGIC FOCUS to be running.
4. To exit, press the POWER button on the front panel.

Apr 23, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Convergence hitacho 61swx10b


To enter digital convergence adjustment
mode without removing the front speaker
grill, please do the following:
1) Press “Magic Focus” button on the front
panel.
2) While “Magic Focus” is running, press
Magic Focus button again to “Stop”.
3) Press “RECALL” or “STATUS” button after
“STOP” OSD appears on the screen to
enter digital convergence mode.
4) Proceed with convergence adjustment
and save the data.
5) Do MAGICS FOCUS sensor initialization.
6) To exit, press POWER button on the front
panel.
7) Normal and through 1080i modes are
stored separately. Each one has it’s own
memory setting.

Aug 11, 2008 | Philips 60P8342 60" Rear Projection...

1 Answer

Samsung Rear Projection Problem (not convergence)


The tv has 2 focus adjustments for each tube, mechanical and electrical.

1. Mechanical focus is set by looking at screen from back (through inspection plate on back of most samsungs) and rotating the lens assembly on CRT. loosen wing nut and turn lens assembly to go through focus and back to best position.

Put convergence pattern on screen and manually misadjust bottom red and green lines convergence so they can be seen through inspection hole.

With back cover of TV off you can usually reach your hand up beside the lens assembly to loosen the wing nut then rotate to adjust. Green is in the middle. The focus will be obvious when you rotate and look

When you are finished make sure the foam dust protector is not over any of the lens assemblies and the wing nut is tight.

2. Electrical focus - located at front of unit. the front grille/speaker cover is removed and maybe a cover over the front crt inspection hole.

In the inspection hole there is a black plastic "Focus/screen adjust Assembly" with 2 rows of 3 controls.

One row is focus and the other is screen. The middle controls are for green with R/B on either side. Usually the controls are labelled as "focus" and "screen". You want to adjust the focus controls, one for each color. Look for the focus or screen label imprinted in the plastic. Don't play with the screen settings.

With the same misadjusted convergence pattern you can see a red, blue and green line. Adjust green focus and watch green line for best focus. Do same for other 2.

Screen adjustments are very exact and delicate. The easiest way to deal with them is to turn color off in Customer adjust menu. Put any color tone adjustments in the middle (low, med, high, put at med).

You should have a b/w picture if there are no crt or other color related faults. If it is close to B/W leave screens alone.

If the pix is too green, then the green screen setting must be reduced a small amount. Do not play with these adjustments as most TV repairrers have a difficult time adjusting them.

If focus adjustments don't help then focus control or CRT may be defective. Needs expert to determine.

easyab

http://calgaryconvergencerepair.weebly.com/convergence-ics.html


Jun 24, 2008 | Samsung HCM4216W 42" Rear Projection...

1 Answer

Picture blury


Its behind the speaker grille up front , remove the grille and then a small access panel and you will see the focus control with 1 button for each CRT 3 buttons in all.

Jun 16, 2008 | Samsung PCL545R 54" Rear Projection...

1 Answer

Thin red horizontal lines across screen


replace the focus block or try to adjust the screen control on the focus block for red only. this will affect the white balance of the set so adjust it carefully. the focus block is located on the front inside the set. remove the speaker cover then the 4 screws on the front plate. the focus block is 3" x 2" black box with 6 adjustment posts three for focus and three for screen. adjust only the affected screen (R).

Mar 13, 2008 | Sony Grand WEGA KDP-57XBR2 57" Rear...

1 Answer

Toshiba tv-model tz55v61


If the red,green and blue mixture adjustment is what you want...
remove front lower speaker grill & access panel..locate RGB
adjust on Screen / focus block.......slightly adjust screen controls for best mixture....do not adjust focus controls.....T.

Jan 10, 2008 | Toshiba TZ55V61 55" Rear Projection...

1 Answer

Blurry picture


1)Remove rear cover = clean RGB lens with soft cloth
2)Remove front speaker grill cover and access panel
Locate screen / focus block = adjust RGB focus controls
3)Last,if needed, unlock each focus lens cap = adjust then lock
................................................T.

Dec 01, 2007 | Sony KP-51HW40 51" Rear Projection...

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