Apex TV Service Mode

I don't have service mode specifications but I do have a Samsung and looked around for how to get it in service mode some time ago because the HDMI cables somehow disconnected themselves a lot. Thought it was an electronic problem but it turned out to be a parenting problem instead SO I have never used this information and can not vouch for it. I cut and paste it from a note I copied from a forum entry to use at your discretion:
First post:
To enter "Service Mode" Press the remote - control keys in this sequence :
From Standby Info-Menu-Mute-Power On
- The buttons are active in the service mode.
Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left, Arrow Right, Menu, Enter, Number Key(0~9)
Careful though there are things you shouldn't touch in this menu.

avforums.com/forums/lcd-led-lc­d-tvs/601553-samsung-service-m­enu-research.html

Another post:
Method 1
Put TV on standby and then push in series these buttons on the remote: 'info, menu, mute, power' the TV will then turn itself on and display a menu.
Method 2
Turn the power off. On the remote, press Mute followed by 1, 8, 2, Power in sequence.
Method 3
With the TV in standby, press the {DISPLAY} {P.STD} {MUTE} {POWER} on the remote.
Method 4
With the TV in standby, press the {SLEEP} {P.STD} {MUTE} {POWER} on the remote.
Method 5
With the TV in standby, press the {DISPLAY} {MENU} {MUTE} {POWER} on the remote.
Method 6
With the TV in standby. On the remote, press Mute followed by 1, 1, 9, Enter in sequence.
Samsung LCD Monitor Service Menu Instructions

End quote.
Good luck. Just a basic suggestion you probably don't need: keep track of any changes made by writing them down so you can put it all back if you have to.

Try this:

• Turn the TV off.
• Press and hold the {VOL -} button ON THE TV and
  the {TV/VIDEO} button on the remote for at least 5 seconds.
• The TV will turn on with the Service Menu displayed.

Here's how to access the SM:

• While the TV is in standby:
• Press the {DISPLAY}, {5}, {VOL+} & {POWER} buttons.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jason_70466cb634a57543

Press the volume + and channel - buttons at the same time for about 5 seconds. It must make it into service mode. But, what are you intended to do after entering this mode? There will be a special screen display, that will not resemble to normal user menu. Any data value set here should be changed very carefully. Improper data setting to this mode, might even make TV iresponsive to any external signals, means, the TV has gone for ever. If you do not know anything about this mode, and adjustments, never enter into it. Let it do by any experienced service technician. For more procedure to get into service mode and to make adjustments, check this link, if you wish.http://electronicshelponline.blogspot.com/

hello,
To switch off hotel ode on samsung, enter:
1. On standby press info-menu-mute-power or,
2. press mute-1-8-2

After service mode appear, Choose option block,
Fine Hotel mode, change to off.

If in option block you can't fine it, try open other block.
Good luck.

press one time display key and three times mute .service mode will open

1. ENTERING TO SERVICE MODE
MUTE
S
(Service mode display)
3) While pressing the MUTE button,
press MENU button on TV set.
2) Press MUTE button
again to keep pressing.
1) Press MUTE button twice
on Remote Control.
2. DISPLAYING THE ADJUSTMENT MENU
1) Press MENU button on TV.
Adjustment mode
Press
Press
Service mode
Item
S Data
3. KEY FUNCTION IN THE SERVICE MODE
The following key entry during display of adjustment menu provides special functions.
Screen adjustment mode ON/OFF: TV (ANT)/VIDEO button (on TV)
Selection of the adjustment items : Channel s/t (on TV or Remote)
Change of the data value : Volume s/t (on TV or Remote)
Adjustment menu mode ON/OFF : MENU button (on TV)
Initialization of the memory (QA02) : RECALL+Channel button on TV (s)
Initialization of the self diagnostic data: RECALL+Channel button on TV (t)
“RCUT” selection : 1 button
“GCUT” selection : 2 button
“BCUT” selection : 3 button
“SCNT” selection : 4 button
“SCOL” selection : 5 button
“TNTC” selection : 6 button
Convergence adj : 7 button
Self diagnostic display : 9 button

Every tv has a secret service menu accessed through a secret sequence of buttons on your non-secret remote.

With the power off, press this button sequence:

mute
1
8
2
power on

You should now be seeing the secret service menu.

TOUCH NOTHING IF YOU DON'T KNOW WHAT IT DOES!!!!!!!!!
Before you touch ANYTHING write down what the initial setting was. I mean it mister.
I think hitting volume down selects an option, while hitting "menu" takes you out of that option and into the area you were just in. There are lots of things to do here.

Before you do anything, go to the video options (there ought to be four of them), under one of them (second one I think) is the option to turn VM or SVM on or off (a setting of "zero" is off). For God's sake turn this off. I think it says "VM level" or something. Anything that says "VM" needs to be set to zero.

Now, to center the picture, I think you'll want the very top menu at the start of the service menu. One is horizontal something and the other is vertical something. BTW, it helps to have a test pattern for overscan when doing this. Do you own a copy of Digital Video Essentials? You should. Again, write down settings before you change them, so if you screw up you can fix it. To save your settings, keep hitting menu until you're back to the first screen, and hit mute twice. Then turn your tv off and back on. After using the service menu, my tv is always put in "dynamic" picture mode. Never, ever, ever use this mode. It will make the picture way too bright and kill your tv before its time. Use DVE or another calibration DVD to get the settings right on your tv.

BTW, you can also correct overscan in the service menu, but I wouldn't push it lower than 5%.

On a standard PU1 chassis use the following:

1. Decrease the volume to 0
2. On remote press and hold the MUTE button till the color of MUTE displayed changes color. At the same time press MENU on the front of the Tv.
CH +/- to select
Vol +/- to change value

All other chassis:
Decrease the volume to 0, Press mute and video at the same time.
Adjust the TV with menu select buttons on remote.
Exit with the power button.
Hope this helps.
Bill

Does's the set have a repair history? If it was previously serviced , the capacitor which is connected between the emitter and the collector of the horizontal output transistor transistor might have been changed with the wrong value, which would cause and overscan situation.The service menu for this set is even hard for technicians to use. It' my opinion if the service manual will not correct the horizontal width, the wrong capacitor was probably installed. Scrivitron (also these sets are known for the forementioned capacitor to short , flame or open.

OK...I paid a whole $50 for an Apex AT2702 that had [undisclosed] vertical zoom, horizontal shift, vertical shift and width issues. Before I raised hell for the person who sold it to me, I decided to first exhaust all alternative solutions.

I found that in order to tweak these settings, you have to be in service mode and must have a service manual which I can email upon request.

BE SURE TO DOCUMENT YOUR CURRENT SETTINGS SINCE ANYTHING YOU CHANGE WILL AFFECT YOUR SET'S PERFORMANCE !!!

1-Reduce your tv volume to 0
2-press the MUTE button on your original tv remote [you'll see "Mute" in red on the screen]
3-AT THE SAME TIME, press MUTE on the same remote and MENU on the tv controls.
This set your tv into service mode [there will be a red "S" at the top-center of your screen.

You'll need the table in the service manual page 47 where there are V-SHIFT, H-SHIFT, V-ZOOM, E/W WIDE default values that will need to be changed. WATCH YOUR SCREEN as you change the values to ensure you don't over do it.

If you have news ticker and sports scores issues, you'll want to be tuned to CNN, FOX, ESPN or whatever to see how your changes are applied.
If you have tv guide problems then tune to that channel or press info and see what happens when you make the changes.

BE SURE TO DOCUMENT YOUR CURRENT SETTINGS SINCE ANYTHING YOU CHANGE WILL AFFECT YOUR SET'S PERFORMANCE.

This has worked for my set and you may attempt this solution on yours at your own risk.
I'm no longer pissed off that I got a bogus tv because it now works just fine and I can see everything!

Good Luck!