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PSP Slim

Front
Front

Here is a PSP Slim that recently died.

Label
Label

For those that are interested, here is the ID label, this is a PSP-2003.

Front Removed
Front Removed

Here the front of the unit has been removed, showing the first internal components.

Screen Removed
Screen Removed

Here is the unit with the LCD removed, here the mainboard is partially visible.

Left Pad
Left Pad

Left pad unit removed from the PSP, with the left speaker & the memory stick slot cover.

Left Pad Rear
Left Pad Rear

Rear of the left pad assembly, showing the speaker.

Joypad
Joypad

Joypad removed from the casing. Resistive unit.

Output Jack
Output Jack

Headphone/data board removed from the casing. This also has TV-Out on the PSP-200x series.

Mainboard
Mainboard

Mainboard removed. Main CPU is at the top. Sockets around the bottom connect to the UMD drive & UMD Drive.

CPU & GPU
CPU & GPU

Closeup of the main chipset. CPU is the top IC.

Mainboard Rear
Mainboard Rear

Rear of the mainboard, Memory Stick socket on the right.

WiFi Chipset
WiFi Chipset

Closeup of the WiFi chipset & the charging power socket on the right.

Charging Chipset
Charging Chipset

Closeup of the bettery connector & the charge controller IC.

UMD Drive
UMD Drive

UMD Drive removed from the rear of the casing. This is a miniature DVD style drive, using a 635nm visible red laser.

UMD Drive Back
UMD Drive Back

Rear of the UMD drive, showing the laser sled & drive motors. Both the spindle motor & the sled motor are 3-phase brushless type. The laser diode/photodiode array is at the top of the laser sled.

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Southwestern Bell Freedom Phone

Phone
Phone

This is an old cordless landline phone, with dead handset batteries.

Handset Radio Board
Handset Radio Board

Here’s the handset with the back removed. Shown is the radio TX/RX board, underneath is the keyboard PCB with the speaker & mic. All the FM radio tuning coils are visible & a LT450GW electromechanical filter.

Handset Radio Board Bottom
Handset Radio Board Bottom

Radio PCB removed from the housing showing the main CPU controlling the unit, a Motorola MC13109FB.

Keypad Board
Keypad Board

The keypad PCB, with also holds the microphone & speaker.

Handset Keypad Board Bottom
Handset Keypad Board Bottom

Bottom of the keypad board, which holds a LSC526534DW 8-Bit µC & a AT93C46R serial EEPROM for phone number storage.

Base Main Board
Base Main Board

Here’s the base unit with it’s top cover removed. Black square object on far right of image is the microphone for intercom use, power supply section is top left, phone interface bottom left, FM radio is centre. Battery snap for power backup is bottom right.

Power Supply Section
Power Supply Section

PSU section of the board on the left here, 9v AC input socket at the bottom, with bridge rectifier diodes & main filter capacitor above. Two green transformers on the right are for audio impedance matching. Another LT450GW filter is visible at the top, part of the base unit FM transceiver.

ICs
ICs

Another 8-bit µC, this time a LSC526535P, paired with another AT93C46 EEPROM. Blue blob is 3.58MHz crystal resonator for the MCU clock. The SEC IC is a KS58015 4-bit binary to DTMF dialer IC. This is controlled by the µC.

Base Main Board Bottom
Base Main Board Bottom

Underside of the base unit Main PCB, showing the matching MC13109FB IC for the radio functions.

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Hair Dryer

Housing
Housing

This is a 1500W hairdryer, death caused by thermal switch failure.

Switch
Switch

This is the switch unit. Attached are two suppression capacitors & a blocking diode. Cold switch is on right.

Heating Element
Heating Element

Heating element unit removed from housing. Coils of Nichrome wire heat the air passing through the dryer. Fan unit is on right.

Thermal Switch
Thermal Switch

Other side of the heating element unit, here can be seen the thermal switch behind the element winding. (Black square object).

Fan Motor
Fan Motor

The fan motor in this dryer is a low voltage DC unit, powered through a resistor formed by part of the heating element to drop the voltage to around 12-24v. Mounted on the back of the motor here is a rectifier assembly. Guide vanes are visible around the motor, to straighten the airflow from the fan blades.

Fan
Fan

5-blade fan forces air through the element at high speed. Designed to rotate at around 13,000RPM.