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, 27 February 2019

HOW TO ENTER SERVICE MODE TO PHILIPS 21D1 4210/94R TV.

HOW TO ENTER SERVICE MODE TO PHILIPS 21D1 4210/94R TV.

To enter into service mode to this model set,

Switch OFF the set by its main power ON/OFF switch.

* Short circuit [pin number-1] of EEPROM IC [ST24C04B1] to ground.
** Switch On the set.

To exit from service mode.

* Switch OFF the set.
** Remove the shorted contacts.
*** Switch to standby mode.

After replacing EEPROM [ST24C04B1], the Address / Data, need to be re-entered after entering into service mode. Initial values are given in table.

ADDRESS DATA TABLE


ADRESS
DATA
ADDRESS
DATA
ADDRESS
DATA
239
255
245
253
251
129
240
255
246
240
252
0
241
50
247
32
253
224
242
69
248
42
254
85
243
0
249
73
255
224
244
255
250
0
223
063

SMART CONTROL SETTING.
RICH

ADRESS
DATA
224 CONTRAST
063
225 BRIGHTNESS
028
226 COLOR
035
227 HUE
032
228 SHARPNESS
053


NATURAL

ADRESS
DATA
229 CONTRAST
047
230 BRIGHTNESS
028
231 COLOR
029
232 HUE
032
233 SHARPNESS
036


SOFT

234 CONTRAST
031
235 BRIGHTNESS
028
236 COLOR
025
237 HUE
032
238 SHARPNESS
020
ADRESS
DATA