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

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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!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday, 9 February 2019

HP - L1735A_L1736A_L1737A_L1798A-RPTVS _ FIRMWARE UPGRADE PROCEDURE

HP - L1735A_L1736A_L1737A_L1798A-RPTVs _ FIRMWARE UPGRADE PROCEDURE





SOFTWARE:  Zappa Projection Firmware.

 HARDWARE:  Zappa Projection TV,  USB Flash Disk.

 USB UPGRADE FUNCTION OVERVIEW

 Zappa builds in USB OTG chip for F/W upgrade purpose; user just put F/W hex code into USB Flash Disk, and then plug it to USB receptacle of TV, system will upgrade the F/W to appropriate unit. There are 7 units can be upgrade, MTV512, VGA EDID, HDMI 1 EDID, HDMI 2 EDID, Pixel works Flash, DTV module Flash and CSC1220.

 USB FLASH DISC USAGE

 Zappa USB OTG only recongnizes USB flash disk device, other devices will be ignored

  • File system: USB driver support FAT 12, FAT 16 and FAT 32 file systems. Also support OTG HOST mode only.
  • File location: User can put F/W hex code in any directory or root directory.
  • Sub File Name: Current driver only can recognize *.hex sub file name. So you may need to rename the sub file name to be “HEX”, such as DTV module, that F/W file name is “vxWorks_user.bin”, you need to rename it to be “vxWorks_user.hex”.
  • File Name: Driver recognizes prefix file name then decide which unit should be upgraded, you can put any characters after prefix, such as date or version. For example, Mtv512_v02. hex, “Mtv512” is prefix and driver will recognize it and upgrade it to MTV512. The prefix file name of each unit list as below.

Upgrade unit
Prefix file name
Upgrade sequence
MTV512
MTV512
1
CSC1220
CSC1220
2
VGA EDID
VGAEDID5020/
VGAEDID5820/
VGAEDID5880/
VGAEDID6580/

3
HDMI EDID
HDMIEDID5020/
HDMIEDID5820/
HDMIEDID5880/
HDMIEDID6580

4
Pixel Works
APPCODE720P/
APPCODE1080P
FLASHER.HEX

5
DTV Boot Code
BOOTROM
6
DTV Module
VXWORKS_USER
7

Can put all of above files into disk or individual file that depend on what unit you want to upgrade. And driver will follow the upgrade sequence to upgrade each unit.

About VGA EDID and HDMI EDID, can put all of model’s EDID code in one USB Flash Drive, USB will according to product ID in EDID EEP ROM to choice correct EDID code.

Note: if the EDID EEP ROM is emtpy or the product ID is wrong, USB will pick one of EDID code on the flash drive to upgrade. So, if you already know the EDID is empty, just put one EDID code that you want to upgrade in USB Flash Drive.

UPGRADE LED INDICATION
Due to LED are controlled by MTV512, so when MTV512 is upgrading, the LED will be lost control, but when MTV512 upgrade complete, it will be reset and back to Standby mode, all LED are OFF, except this unit, the LED indications as below description.

Status                                                                 LED Behavior

Upgrade Proceeding                                       LED rotates from left to right
Unit Upgrade Complete                                  POWER LED still on
Entire Upgrade Process Complete              POWER LED flash
Upgrade Error                                                   TEMP and LAMP are flashed both

USB UPGRADE PROCEDURE
  • Put F/W hex code to USB Flash Disk.
  • TV power state at Standby mode.
  • Plug USB Flash Disk to USB receptacle of TV.
  • LED rotates. (Except MTV512 Unit)
  • Waiting for POWER LED flash or all LED off (MTV512)
  • Power on TV.
  • TV shows Upgrade Complete List report.
Note 1: Pixel works upgrade function will decide what version will be upgraded (720p or 1080p). It depends on VGA EDID product ID, so before upgrade pixel works hex code, please make sure your EDID code is right.
Note 2: If you attempted to upgrade MTV512 and CSC1220, the LED behavior may become strange.
Note 3: If you want to upgrade VGA EDID or HDMI EDID, please remove VGA cable or HDMI cable, because the EDID 12C is wired with USB chip and VGA/HDMI 12C bus.

ERROR HANDLING

What situation Error message occurs.
  • Upgrade Pixel Works without flasher.hex.
  • Unplug USB Disk during upgrading.
  • HEX file format not correct.
  • Upgraded unit no response.
Posted By: FRANK at 05:14
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