REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday, 20 March 2019

EMERSON EPT427 - 27" CTV - SERVICE MODE ADJUSTMENTS

EMERSON EPT427 - 27" CTV - SERVICE MODE ADJUSTMENTS



TO ENTER SERVICE MODE
  • Use the service remote control unit.
  • Turn the power on. (Use main power on the TV unit.)
  • Press " SLEEP " button on the service remote control unit. Version of microcomputer will display on the CRT. (Ex: 5Y10-1.34)
  • Check the display on the lower left is "4A" and if it is not "4A", set it at "4A" according to "3-1 FRENCH,STEREO TYPE, ACCESS CODE, VIDEO TONE,SB SOUND" and "COMB FILTER".
TO MAKE A SERVICE REMOTE CONTROL, OUT OF USER REMOTE CONTROL
  1. Prepare normal remote control unit. (Part No. N0105UD or N0127UD)
  2. Remove 3 Screws from the back lid.
  3. Added J1 (Jumper Wire) to the remote control CBA.
SERVICE MODE SETTINGS
Setting for 7F, FRENCH, STEREO TYPE, ACCESS CODE, VIDEO TONE SB SOUND and COMB FILTER data Values.
  • Enter the Service mode.
  • Press " VOL  DN" button on the Service remote control unit. Display changes " C/D ", " 7F ", " FRENCH ", " STEREO TYPE ", " ACCESS CODE", "VIDEO TONE ", "SB SOUND" and "COMB FILTER" cyclically when " VOL DN" button is pressed.
7F
Press " CH UP/DN" buttons on the Service remote control unit. Then choose " FF ".
FRENCH
Press " CH UP/DN" buttons on the Service remote control unit. Then choose " ON ".
STEREO TYPE
Press " CH UP/DN" buttons on the Service remote control unit. Then choose " MTS "
ACCESS CODE
Press " CH UP/DN" buttons on the Service remote control unit. Then choose " OFF "
VIDEO TONE
Press " CH UP/DN" buttons on the Service remote control unit. Then choose " OFF ".
SB SOUND
Press " CH UP/DN" buttons on the Service remote control unit. Then choose " OFF”
COMB FILTER
Press " CH UP/DN" buttons on the Service remote control unit. Then choose " ON "
Note: C/D and VCO data values are no need to adjust at this moment.
Setting for CONTRAST, COLOR, TINT, V-TINT and SHARP data Values.
  • Enter the Service mode.
  • Press " MENU " button on the Service remote control unit. Display changes " BRT ", " CNT ", " CLR ", " TNT " and " V-TINT " cyclically when " MENU " button is pressed.
CNT
  • Press " MENU " button on the Service remote control unit. Then select " CONTRAST " (CNT) display.
  • Press " CH UP/DN" buttons on the Service remote control unit so that the value of " CONTRAST " (CNT) becomes 92.
CLR
  • Press " MENU " button on the Service remote control unit. Then select " COLOR " (CLR) display.
  • Press " CH UP/DN" buttons on the Service remote control unit so that the value of " COLOR " (CLR) becomes 64.
TNT
  • Press " MENU " button on the Service remote control unit. Then select " TINT " (TNT) display.
  • Press " CH UP/DN" buttons on the Service remote control unit so that the value of " TINT " (TNT) becomes 64.
V-TNT
  • Press " MENU " button on the Service remote control unit. Then select " V-TINT " (V-TNT) display.
  • Press " CH UP/DN" buttons on the Service remote control unit so that the value of " V-TINT " (V-TNT) becomes 64.
Note: BRIGHT data value is no need to adjust at this moment.
All other data settings should be done with an experienced technician, having oscilloscope and signal generator
Posted By: FRANK at 02:43
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