Question about Mitsubishi VS-45607 45" Rear Projection Television

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Focus can it go out of focus?

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On CRT projectors, there is a part called a focus block with adjustments for each picture tube. A sudden loss of focus is pointing to something else, a change in the high voltage. Poor high voltage regulation will cause a loss of focus. If your loss of focus has been gradual, you can try adjusting the controls on the focus block. The focus block is usually a square or rectangular block, usually mounted on the front behind a panel or on the rear behind a panel. it will have a series of red wires coming out of it. There usually are 6 adjustments on the block, 3 for screen voltages and 3 for focus. Be sure you adjusting the right ones, they are usually labeled.

Posted on Nov 09, 2008

  • Any Guy
    Any Guy Nov 09, 2008

    Is there another question or some other information you need? Just wondering why you rated this as helpful, I thought I had answered your question.

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1 Answer

How to adjust the lens-focus?


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.

Jun 25, 2010 | Samsung HCM4216W 42" Rear Projection...

1 Answer

Where is the focus control


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

Jun 08, 2010 | Hitachi 51S500 51" Rear Projection...

1 Answer

Jvc av65wp55 out of focus


When you say you changed the focus block, did you adjust each color individually ? Most projection sets are adjusted by covering 2 lens and focusing each one seperately. Try this , it has always worked for me

Sep 04, 2009 | Hitachi 46F510 46" Projection HDTV

2 Answers

AKAI PT5598HD - I HAVE REPLACED THE CONVERGENCE BOARD AND PICTURE AND SOUND ARE "ON" BUT "PERFECT FOCUS" WILL NOT BRING BLUE INTO FOCUS. "PF" STOPS AT 37% - RED AND GREEN PATTERS ARE SHARP BUT BLUE IS...


Most of these sets have a SCREEN/FOCUS block---usually all black with 6 controls----you need to look close at it as one row of 3 will be screen controls---don't touch those----the other 3 will be FOCUS- MARKED in little letters will be r,g,b(red,green blue). TWO ways to adjust the focus: 1. carefully locate the blue focus control and adjust to see if blue will improve in focus. 2. each of the 3 large lens where the picture comes out have a wing nut and a slot--you can loosen the nut and turn the lens---usually best focus that way is if the part that turns is in the middle of the available area to move it.

I should point out that all projection sets intentionally de focus the blue--the lines if blue should be clear but never as perfect as green or red--this is normal.

I do this here for free so if this has been helpful give me a vote here.

if you need direct help:
etower.766@netzero.net

Aug 20, 2009 | Akai PT5598HD 55" Rear Projection...

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

Focus not sharp


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

Feb 16, 2009 | Pioneer Televison & Video

1 Answer

Self focus not working on samsung 5065w 50 inch asking to check factory data


As ima_rm2000 noted, the HLN is manual focus.  There is a focus ring at the base of the lens assembly.  Here is PDF of the focus assembly.  You have to remove the back of the set to access this, and tape/tie the lamp door switch closed so the TV will power up so you can focus it.

Jan 12, 2009 | Samsung HLN5065W 50" Rear Projection...

2 Answers

Magic Focus does not work.


Convergence issues usually resolved by changing convergence output amplifier IC's.....Original STK392-110 should be replaced
with upgrade Stk394-160E Hitachi part # CZ 01341,change both
for reliability.....check B+ feed resistors for over-heating....T.

Feb 04, 2008 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

Magic focus


Repair Magic focus or convergence problem? Because MF is the way you auto set your set to converg and focus.

Oct 06, 2007 | Hitachi 53UDX10B 53" Rear Projection...

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