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.

How to use the site:
- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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 !

Tuesday 19 March 2019

SHARP LC-32GA8 – LC-32BV8 – LC-37GA8 – LC-37BV8 - SHARP LCD TV - RS-232C METHOD - SOFTWARE UPDATE PROCEDURE

LC-32GA8 – LC-32BV8 – LC-37GA8 – LC-37BV8 - SHARP LCD TV - RS-232C METHOD - SOFTWARE UPDATE PROCEDURE


SOFTWARE UPDATE
There are 3 methods to update software in the VCTp: I2C method, RS-232C HyperTerminal and RS-232C Tera Term method.
RS-232C method is allowed when the TV is working properly and the action should be only software upgrade.
I2C method is required when the VCTp flash is empty or corrupted (it means, any software inside IC running).
RS-232C Method Description (HyperTerminal).
The hardware tools requirement are:
  • A Modem-null (Cross type) DB9 female to DB9 female cable.
  • An adaptor DB9 male to mini-Din 9 pin male cable (Sharp Code: QCNWGA015WJPZ)
  • Make the connections as indicated in the figure:

Before using RS-232C updating method is necessary to configure a Terminal PC software. HyperTerminal has been selected as a Terminal software because it’s include in all Windows versions as an accessory, and you can find it inside “Accessories\Communications” folder. For this reason, please follow carefully the next steps:
  • First time HyperTerminal is used, it’s necessary to configure some settings. Follows next action to configure two connection: low speed (9600bps) and high speed (115200bps).
  • Create a New Connection file with name “P55_9600bps”.
  • Select a free COM port and select the Port Settings properties as follows:
  • Click on “File\Properties” menu for selecting the General and ASCII properties as follows:
  • Select “New Connection” in the File Menu.
  • Answer “Yes” to close current connection and “Yes” to save session “P55_9600bps”.
  • Create a new connection with the name “P55_115200bps”.
  • Select a the same COM port used in item 2 and select the Port Settings properties as follows
  • Select the same General and ASCII properties as item 3.
  • Close HyperTerminal session, answering  “Yes” to close current connection and  “Yes” to save session “P55_115200bps”.
  • To start updating session, click over “P55_9600bps” icon that you can find in the “START\All programs\Accessories\Communications\HyperTerminal\HyperTerminal” folder and follow next procedure:
  • Check the connection between TV set and PC, sending a wrong command, as for example: “aaa”. TV set returns an “ERR” label as an syntaxes ERROR (Not correct order or sequence).

  • Send the command “DWMD” to enter TV set in Download Mode. The TV set answer sending same symbol continuously. If this symbol character doesn’t appear, don’t worry and pass to next step.
  • Close this connection and open “P55_115200bps” connection clicking over the “P55_115200bps” that you can find in “START\All programs\Accessories\ Communications\HyperTerminal\HyperTerminal” folder.
  • Using “Transfer\Send file…” menu, select desired file (.bin format) and the transmission protocol (Xmodem) as show below:

  • After press “Send” button the updating process starts as follows:
  • When flash update process finishes, the “Flash Programming Complete” label appears in the screen.

VERY IMPORTANT: During the updating time, please don’t use the PC for other purposes, in order to abolish communication problems between TV set and PC. If TV set was not updated properly, the TV won’t have the software to start-up again, and you must follow the “I2C method” to update another time the TV set.
Posted By: FRANK at 03:13
TAG: , ,