LEGO Harry Potter: Years 1-4 (PlayStation 3)

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Christmas in July

If you purchase and use the "Christmas" extra, the room you use it in will keep playing the same music for the rest of the game... Just like the red-haired Ron cheat, it will not revert back to its regular music.

Gold Brick Passwords

Enter the following codes in Wiseacres Wizarding Supplies upstairs.

EffectPassword
Gold Brick 01QE4VC7
Gold Brick 02FY8H97
Gold Brick 033MQT4P
Gold Brick 04PQPM7Z
Gold Brick 05ZY2CPA
Gold Brick 063GMTP6
Gold Brick 07XY6VYZ
Gold Brick 08TUNC4W
Gold Brick 09EJ42Q6
Gold Brick 10GFJCV9
Gold Brick 11DZCY6G

Misc. Passwords

Enter the following passwords in Wiseacres Wizarding Supplies.

EffectPassword
Carrot WandsAUC8EH
Character StudsH27KGC
Character Token DetectorHA79V8
ChristmasT7PVVN
Disguise4DMK2R
Extra HeartsJ9U6Z9
Fall RescueZEX7MV
Fast DigZ9BFAD
Fast MagicFA3GQA
Gold Brick Detector84QNQN
Hogwarts Crest DetectorTTMC6D
Ice RinkF88VUW
InvincibilityQQWC6B
Red Brick Detector7AD7HE
Regenerate Hearts89ML2W
Score x10H8X69Y
Score x274YKR7
Score x4J3WHNK
Score x6XK9ANE
Score x8HUFV2H
SilhouttesHZBVX7
Singing MandrakeBMEU6X
Stud Magnet67FKWZ

Quick Coins

Find, post and purchase the "Collect Ghost Studs" extra. The parcel was either in Harry's bedroom or on the courtyard fountain (You will need to have learned the Leviosa spell first). Once activated the Ghost Studs are worth 1,000 each. "Get lost" the ghost will return to you and lay more studs -- it's easy money. A full trip from the Dorm to the Great Hall is worth about 100,000.

Red Haired Ron

After completing the first two levels of the game, you should have enough LEGO Pieces access this Easter Egg. Go into the wizard town through the Leaky Cauldron, the last shop on the left (before the bank), sells custom spells. Purchase the spell called 'Multicorfors'(a spell that turns the characters into "gingers"). Cast it on Ron Weasley. Once cast, he will shake his head as if it has worn off, but his hair will not revert back to its natural color.

Snape

Go to the room were you make the old man potion in year four and go through the door to the right. In the room their is a gate with three locks on it. In the room their are three keys. To get the keys you will need Hermione, Griphook, and a Hufflepuff student (you can also use Dumbledore). To get the first key, go near the door where their is a picture with a man in it. Wave to the picture with the Hufflepuff student or Dumbledore and he will throw you a key. You can get the second key by making Griphook turn the key on the giant snake statue. The statue will move and drop the key out of its mouth. To get the third key you need Hermione to copy the pattern on the bookshelf. Once you have put the keys into the gate it will open and show some Lego bricks. Move the bricks to make stairs (going to the left). Once your done, go up and walk to the far left. Their is an open chest with Professor Snapes character token.

Spell Passwords

Enter Wiseacres Wizarding Equipment in Diagon Alley and speak to the vendor upstairs to enter the following codes to unlock the spell.

EffectPassword
AccioVE9VV7
AnteoculatiaQFB6NR
Calvorio6DNR6L
Colovaria9GJ442
Engorgio SkullusCD4JLX
EntomorphisMYN3NB
FlipendoND2L7W
GlaciusERA9DR
HerbiforsH8FTHL
IncarcerousYEB9Q9
Locomotor Mortis2M2XJ6
MulticorforsJK6QRM
Redactum SkullusUW8LRH
Rictusempra2UCA3M
Slugulus EructoU6EE8X
StupefyUWDJ4Y
TarentallegraKWWQ44
Trip JinxYZNRF6

Trophies

Complete the following tasks to unlock PlayStation 3 trophy rewards.

TrophyHow to unlock
Animagus (Bronze)Unlock all Animagi.
Arachnophobic (Bronze)Defeat 20 spiders with Ron.
Back in Time (Bronze)Use the Time-Turner.
Boo! (Bronze)Scare 20 students using a ghost character.
Building Blocks (Silver)Complete all the LEGO Builder tutorial levels.
Chilled out (Bronze)Freeze 20 characters using Glacius.
Crest Collector (Silver)Collect all of the house crests in Year 1.
Crest Fanatic (Silver)Collect all of the house crests in Year 2.
Dark Wizards (Bronze)Buy every version of Voldemort (Quirrell/Tom Riddle/Voldemort).
Defeating the Object (Bronze)Defeat the mountain troll, using Quirrell.
Ghostly Treasure (Bronze)Collect 500 ghost studs.
Good Dog (Bronze)Defeat 20 enemies with Fang.
Head Boy (Silver)Complete Year Four Story Levels.
Junior (Silver)Complete Year One Story Levels.
Lumos Solem (Bronze)Destroy 50 Devil's Snare plants.
Muggle Trouble (Bronze)Defeat 10 enemies with a Muggle character.
Multiplier (Bronze)Collect 10 million studs in one level.
Power Up! (Silver)Collect all of the Red Bricks.
Prefect (Silver)Complete Year Three Story Levels.
Quick Quidditch (Bronze)Complete the Quidditch level within five minutes.
Quidditch Team (Bronze)Buy the entire Gryffindor Quidditch team from Book One.
Quiet Please! (Bronze)Turn the sound and music down to 0 in the options menu whilst in the library.
Quirrell Quandary (Bronze)Defeat Quirrell in the Quirrell boss fight, using Voldemort.
Role Reversal (Bronze)Defeat Harry (as Voldemort), in the GraveyardDefeat Harry (as Voldemort), in the Graveyard.
Senior (Silver)Complete Year Two Story Levels.
Solid Snape (Bronze)Hide in a barrel as Snape.
Story Complete! (Gold)Complete the Story Levels in all four years.
Stud Magnet (Silver)Get True Wizard in every level.
Student Rescue (Silver)Rescue all students in peril.
Teacher's pet (Gold)Complete All Story Lessons.
The Bonus Level is Yours (Gold)Collect all of the Gold Bricks.
The Ultimate Collector (Silver)Collect all of the house crests in Year 4.
True Wizard (Platinum)Collect all the bronze, silver and gold trophies.
Ultra Collector (Silver)Collect all of the house crests in Year 3.
Watch Out! (Bronze)Knock over ten characters using a ride-able object.
Wonderful Weasleys (Bronze)Buy the entire Weasley family.
You're the Best (Gold)Complete the game to 100%.

Unlimited Ghost Studs

Whenever Nearly Headless Nick is floating still (and you have the Ghost Stud extra on), stand under him and he'll constantly give you ghost studs.