DIY Series 84: Samsung TV Keeps Restarting

Samsung TV Keeps Restarting (Model: Samsung 55" Smart TV UA55KU6000K)

Symptoms:

• Samsung TV (55" Smart TV) is restarting every 5 seconds with no picture and a black screen
• Suspect either backlight malfunction or LCD Panel itself is cracked somewhere

Findings:

• LCD Panel is having cracks near bottom right-side corner, causing short circuit at LCD Panel Driver Board.
• This fixing (bypassing few pins at ribbon cable) only resume the TV screen to be able to display, but unable to solve the LCD panel cracked issue. Thus, the TV screen display is deteriorated (slightly red in colour) at the right-side screen. 
• New TV LCD panel from Samsung costs RM2xxx, which is NOT WORTH for a repair. This TV is still able to work temporarily while waiting for new TV purchase.

Videos:

1. Samsung TV is restarting every 5 seconds with no picture and a black screen
2. Samsung TV able to resume working (with deteriorated screen at right-side) 

Photos:

1. Flip over the TV, unscrew all the screws at the back cover of the TV
2. Identify the Power Supply Board (right), Control Board (left, with built-in T-CON), and Panel Driver Board (bottom, with 2 ribbon cables connected from Control Board)
3. Disconnect the Power Supply Board supply output cable to Control Board, turn on the TV, the backlight is turned ON, means backlight is working fine. Turn off the TV, reconnect back the supply output cable.
4. Disconnect the 2 ribbon cables from Control Board to Panel Driver Board, turn on the TV, the backlight is turned ON, followed by a sound from the speakers, means Control Board is working fine. Turn off the TV, reconnect back the 2 ribbon cables.
5. Analyse the ribbon cable, by disconnecting 1-by-1. Use cellophane tape to mask some of the pins on ribbon cable, then turn the TV on and off to identify if the TV screen is working or not (repetitively for many times). Finally identified only 2 pins that needs to be masked (to isolate short-circuit caused by cracked LCD panel) at the right-side Panel Driver Board.
6. Upon completed fixing, turn on the TV, you can see clearly the cracked LCD panel (located near the bottom right-side corner)

Tools:

• Screwdriver
• Scissor
• Cellophane Tape

Cost Involved:

• Free (Although unable to fix the cracked TV panel screen, but at least able to make the TV to display again without restarting, with deteriorated screen display.)

Reference:

• Help! My TV Keeps Restarting! - 58" Samsung LED TV Panel Driver Board Complex Repair
• How to fix a TV with a blank screen

DIY Series 83: Fixing PerySmith Smart Cordless Vacuum Cleaner (Ai.9 Lite)

Fixing PerySmith Smart Cordless Vacuum Cleaner (Ai.9 Lite)

Symptoms:

• Vacuum cleaner brush roller unable to rotate, thus it is not working at all

Findings:

• Teardown to check the motor and rubber belt, everything is running smoothly
• The roller holder is not rotating only when having a load, means unable to drive at high torque
• Identified loosen screw unable to drive the roller holder due to wear and tear at screw hole
• Unable to find any replacement parts (roller holder) online locally, thus trying on fixing it without involving any new parts

Videos:

1. Video from the vacuum cleaner's owner. Brush roller is not working.
2. Teardown the roller head module and check the motor & rubber belt, no abnormality found.
3. Use hand to hold the roller holder while motor is operating, found the culprit (loosen screw)
4. After fixing (using epoxy resin), test the roller holder operation
5. After fixing (using epoxy resin), test the brush roller operation

Photos:

1. Example of Epoxy Resin (1:1 ratio) solution kit
2. Pour same amount of resin and hardener into a container, stir and mix it with wooden stick.
3. Use the dropper to drop the epoxy resin into the roller holder (where the loosen screw located)
4. Let the epoxy resin to be harden overnight (recommended at least 24hrs)
5. Use the leftover epoxy resin to make some wildflower keychains (byproducts)

Tools:

• Screwdriver
• Epoxy Resin Solution Kit

Cost Involved:

• Epoxy Resin Solution Kit: USD$6.00 ~ USD$8.00

DIY Series 82: Car Aircond Blower Fan Relay

Proton Saga BLM Aircond Blower Fan Not Working

Symptoms:

• When turning the Fan Speed Control Knob at Aircond Control Panel, the blower fan of aircond is not working.

Possible Issues:

1. Blower Fan Motor malfunction 
2. Blower Fan Relay malfunction
3. Aircond Control Panel malfunction (very rare case)

Findings:

• Take out the blower fan motor (under glove compartment), test it directly by connecting to 12V car battery terminals, blower fan motor is working fine.
• Checked the wire connector before blower fan motor using multimeter, there is no supply (12V) to blower fan motor. 
• Check the blower fan relay, found out it is having burnt mark. Replaced with new relay (PW537074).

Photos:

1. Understanding the circuit diagram of Blower Fan Motor 
2. Common Relay (PW537074) Circuit Diagram & Pin Configuration
3. Order a new relay for part replacement
4. Unscrew 2 screws at the cover under steering wheel (right side)
5. Unscrew 2 screws at the cover under steering wheel (left side)
6. Dismantle the fuse compartment cover
7. Dismantle the cover under the steering wheel
8. Identify the relay for blower fan motor (located at the middle of 3 relays)
9. Replace malfunction relay to a new unit
10. Further analysis, found burnt mark at the malfunction relay

Tools:

• Screwdriver
• Multimeter

Costs Involved:

• Blower Fan Relay (PW537074): USD$1 ~ USD$3

DIY Series 81: Repair Rubine Vetta Ceiling Fan

Repair Rubine Vetta Ceiling Fan

Symptoms:

• Fan speeds are not working according to the speed setting via IR remote control; certain fan speeds are working fine but certain fan speeds are too slow. 
• IR remote control is working fine. Suspect most likely due to aging / malfunction capacitors.

Photos:

1. Rubine Ceiling Fan (Model: Vetta 46" / Vetta 56") & Parts Listing.
2. How to dismantle the IR Sensor Cap and Receiver Cover (Loosen: CCW, Tighten: CW)
3. Unscrew 3 screws to remove Fan Housing, then unscrew 3 screws to remove switch housing.
4. Disconnect the wiring from the white colour connector (5-pin) in order to take down the PCB board.
5. Identify the possible broken parts, removed 4 capacitors (suspected to be broken)
6. Check capacitors using multimeter, 3 out of 4 capacitors are broken.
7. Order new parts, solder on board and connect it back to the ceiling fan.

Tools Required:

• Screwdriver
• Multimeter
• Soldering iron
• Desoldering pump

Costs Involved:

• Capacitor (CBB20, 2.5uF, 300V): USD$0.80 ~ USD$1.50
• Capacitor (CBB20, 3.5uF, 300V): USD$0.80 ~ USD$1.50
• Capacitor (CBB61, 1.0uF, 450V): USD$0.80 ~ USD$1.50
• Capacitor (CBB61, 2.0uF, 450V): USD$0.80 ~ USD$1.50

Additional Notes:

• Same PCB Board used for Rubine Vetta / Picco / Fitto / Primo / Able
• Remote Control Pairing Procedure (if needed)
• Inserts 2 units of AAA battery into the remote control
• Switch ON the ceiling fan (power supply)
• Press the OFF button on the remote control within 30sec after power "Switch ON" and hold for 5sec until you hear a "beep" sound
• Pairing completed

Info Share:

• Example of Speed Control Switch Capacitor configuration
• e.g.: C1 = Capacitor (CBB20, 2.5uF, 300V)
• e.g.: C2 = Capacitor (CBB20, 3.5uF, 300V)

• Example of Start/Run Capacitor configuration
• e.g.: Capacitor (CBB61, 2.0uF, 450V)

Rubine Vetta Repair/Fixing Log:

• Set #01: 17/Apr/2025
• Set #02: 24/Apr/2025
• Set #03: 01/May/2005
• Set #04: 01/May/2005

InfoShare: How to Get Refund from RFID for Double Deduction or Overcharged?

How to Get Refund from RFID for Double Deduction or Overcharged?

• Go to Touch'nGo website (https://www.touchngo.com.my/), look for eRefund > RFID.

• You will be redirect to RFID Portal Login (https://rfid.touchngo.com.my/login), register a new account and login using your login.

 

• RFID Portal Dashboard page after login into your account

• Make sure all your active RFID Tag IDs are listed here, else add in accordingly

• Go to Refund > Refund Request, submit your request by click the "Next" button

• Get the target transaction records (e.g.: double deduction) and click "Request Refund"

• Fill in the required info and submit the form

• Once submitted, you will be provided a copy of summary with Case Reference Number

• You will be refunded within 30 days from the request submission. For my case, it is about 14 days.

• An email notification will be sent out to you, and refund will be credited into your TnG eWallet

DIY Series 80: Portable Fan Battery Replacement

Portable Fan Battery Replacement (18650 Li-Ion Battery Pack)

Symptoms:

• Continuously charging but unable to operate using internal battery pack after disconnected from power supply
• Able to operate using USB supply, unable to operate using internal battery pack supply

Findings:

• 18650 Li-Ion Battery Pack is no longer in good condition, need to replace with new battery pack

Photos:

1. Example of OEM Battery Pack I bought previously (US$7.00 ~ US$8.00)
2. Example of 18650 Li-Ion Battery for this DIY project (US$0.50 x 2pcs = US$1.00)
3. Portable Fan after folded (top view)
4. Portable Fan after folded (bottom view)
5. Unscrew 6 screws at the bottom
6. Open up the bottom housing and removed the malfunction battery
7. Prepare nickel strip (using scissor) according to the length/size required
8. Shaped the DIY wire lug using wire stripper
9. Clamp the DIY wire lug onto the wire cut out from old battery pack
10. Use 2pcs of 18650 Li-Ion Battery for making custom DIY Battery Pack
11. Use Spot Welder to join 2pcs of 18650 batteries with nickel strip and connect the positive terminal (with DIY wire lug) using Spot Welder.
12. Use Spot Welder to join 2pcs of 18650 batteries with nickel strip and connect the negative terminal (with DIY wire lug) using Spot Welder.
13. Check the connectivity using multimeter, then connect the new DIY Battery Pack (2 sets) to the main board

Video:

1. Test the new DIY Battery Packs and it is working

Tools Required:

• Screwdriver
• Scissor
• Wire Stripper
• Multimeter 
• Spot Welder

Cost Involved:

• 18650 Li-Ion Battery (US$0.50 x 2 = US$1.00 / set)
• Total of 2 sets of DIY Battery Pack needed (US$1.00 x 2 = US$2.00)

Cost Saving:

• OEM Battery Pack:  US$7.00 / set
• DIY Battery Pack: US$1.00 / set
• Saving = (US$7.00 - US$1.00) x 2 sets = US$12.00

Related Links:

• Spot Welding Explained