Question about Televison & Video
I have a Samsung Tantus SP-524JMF projection tv. Image displayed is mostly blue and greens, no red. I opened the back and noticed that the red projection lamp is not lit. Is this a simple case of replacing the red crt, or further troubleshooting is required? I also noticed some sort of oily liquid on the pcb, underneath the red crt. Any help would be appreciated, and thanks in advance
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Posted on Jan 02, 2017
SOURCE: Lamp Light Red - No Screen Image
It could be the a problem with the lamp ballist circuit, or just a bad lamp socket, or simply a bad lamp. The only way to tell is to call out a servicer as that would be alot less expensive then to get a new lamp and then that not be the problem. These problems can be a little hair pulling at times, thats why i have no hair left!! LOL Good Luck
Posted on Mar 21, 2007
SOURCE: Mitsubishi Projection TV HD1080
you need to replace your convergence ICs. Post your model number of your set, and I will post the correct stk numbers and a link where you can get new ones.
Posted on Apr 16, 2008
SOURCE: Red,Blue,Green Image
YOu have convergence issues. Ok first question. IN your setup menu do you have the convergence option/ if you DO not then it can be a specail fusable link. fl231 if you do. next question do the picture bow in at the middle. if you do then it possibly a convergence power supply issue. next if you go into setup convergence does the crosshairs adjust up or down left to right on both blue and red. I if so then theres is a chance that it can be a convergence adjusment or a amplifer problem AS always THIS SET CAN GENERATE LEATHAL 380 VOLTS EVEN WITH SET UPLUGED SO BE CAREFULL.
Posted on Jun 21, 2008
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.
Posted on Jun 25, 2008
You may try to get into the service menu and adjust screens/drives level(procedure below).
But first turn the color off completely and adjust you brightness to mid-range, what you`ll want to do is a grey raster or bring it as black and white as you can while adjusting the red/green /blue guns or tubes.
Also get a piece of paper and pen because you`ll want to record the original values of the items you may change.
You want to go into the adjustment menu.
Hope this will help Good luck
In quick sequence on the remote press:
MUTE - 1 - 8 - 2 - POWER buttons.
The TV will turn On with the Service Menu displayed.
ADJUSTMENT - TEST PATTERN - SET OPTION BYTE - FACTORY RESET
Select the function and use the VOL+ button to enter.
Save settings and exit by pushing MUTE twice then POWER .
Posted on Nov 19, 2009
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