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, 13 February 2019

POLOROID FLM-4034B FLM-4232HM FLM-4234BH BOARD REPLACEMENT TV SERVICE MODE - DISASSEMBLE PROCEDURE - PASSWORD UNLOCK

  POLOROID FLM-4034B FLM-4232HM FLM-4234BH BOARD REPLACEMENT  TV SERVICE MODE - DISASSEMBLE PROCEDURE - PASSWORD UNLOCK 

DSPLAY CELL DEFECT SPECIFICATION
In some cases, a panel may have defect cells that cannot be controlled.  The defective cells can be categorized into two types.  [1] - Non-lighting or dark cell defect:  the defect in which the cell is always off.  [2] - Non-exitigushing of bright cell defect:  defect in which the cell is always ON.
If 7 or more defective pixels across the entire LCD screen, replace the LCD panel.
Service Mode Entry Method
  • Power ON TV.
  • Press "Volume Up" & "Channel Up" buttons on the 'TV' simultaneously and release both of them.
  • Service mode will be displayed.
  • To EXIT service mode, Power Off the TV by its remote control. 
NB: Never enter into service mode, or adjust any data value set there, if you are not an experienced service personal.  Improper settings may permanently damage the set, might make it inoperable by any means.
DIS-ASSEMBLY PROCEDURE Remove 6 screws marked here from the TV stand.
Remove a screw from the Control Box Cover, and remove the cover from the TV
Remove the two screws from the Control Box.
Lift the Control Box Upwards, and then towards the bottom of the TV to unhook it.
Unplug two cables from the Control Box, and remove the box from the TV.
Remove 7 screws from the rear cabinet cover. 
Remove seven screws from the rear cabinet cover , and remove the rear cabinet cover from the TV.
Remove four EMI Foam Standoffs, and EMI aluminium foil shielding tape. Must re-install the EMI foam standoffs & aluminium foil shielding tape when re-assemble it.  So remove them carefully without damaging it.
From the D-Sub board, remove the speaker wires, Front | Side Control Button wire, LCD Panel wire and A/V wire.
Remove the black tape from the speaker wire and ceramic ring [PIC2] and save for reassembly. Remove 8 screws and remove the stand support frame from the TV.
Remove four screws from the left side frame support.
Remove four screws from the right side frame support.
Remove four screws from the bottom of the  left and right side frame supports, and remove the frame supports from the TV.
Remove six screws from the LCD Panel and remove it from the TV.  To avoid damage, two people are required to lift the LCD panel from the TV.
                                             Can't Power On TV? This TV is equipped with a safety switch.  In the event of electrical storm or power outage the safety fuse is designed to protect the TV.  If TV has no Power, check this fuse by prying the cover off, following the illustration below.  If the fuse is blown, replace it with a [4A-250V - 5x20mm size]   fuse, Time Lag Fuse - Slow Blow type.
Having trouble with setting Parental Control {V-Chip] The factory preset password is '0000'.  This password must be used first before setting  your own personal password.  In the event the password is lost,  the Master Password is [8202].  This master password overrides all passwords.  The Master password can't be changed and should be kept in a safe place away from children. A/V BOARD REMOVAL AND REPLACEMENT
  • Disassemble control box cover, and rear cabinet cover and remove A/V ass'y.
  • Using a small pair of wire cutter's grip the side-locking tabs and pivot back towards the A/V cable connector [PIC1].  Locking tab should only pivot about 45 degrees.  do the same for opposite side of the A/V ass'y.
  • Slide out A/V board and replace [PIC2].
  • Push locking tabs in to secure replaced A/V board.
FRONT / SIDE CONTROL BUTTONS REMOVAL AND REPLACEMENT
  • Disassemble control box cover and rear cabinet cover.
  • The control button board is attached with Glue.  Use alcohol to soften the Glue and remove the control button board [PIC1].
  • Replace the control board and use glue to fasten  to front bezel.  
FLM 4034B _ EXPLODED VIEW
FLM-4232HM _ FLM-4234BH _ EXPLODED VIEW