I've had a logic board replaced in my 6.2 mba in an apple store due to hw failure (it showed no signs of life). but now it keeps on crashing every half an hour, i've tried to reset both smc and nvram and also updated the efi. Any ideas what the problem might be? should i take it back to the apple store? Thx for reply! 
here's one of the logs from console:
here's one of the logs from console:
Code:
Machine-check capabilities: 0x0000000000000c07
family: 6 model: 69 stepping: 1 microcode: 23
signature: 0x40651
Intel(R) Core(TM) i5-4250U CPU @ 1.30GHz
7 error-reporting banks
Processor 0: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC4_STATUS(0x411): 0xba00000058000402
IA32_MC4_MISC(0x413): 0x0000000000000000
Processor 1: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC4_STATUS(0x411): 0xba00000058000402
IA32_MC4_MISC(0x413): 0x0000000000000000
Processor 2: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC4_STATUS(0x411): 0xba00000058000402
IA32_MC4_MISC(0x413): 0x0000000000000000
Processor 3: IA32_MCG_STATUS: 0x0000000000000005
IA32_MC4_STATUS(0x411): 0xba00000058000402
IA32_MC4_MISC(0x413): 0x0000000000000000
panic(cpu 0 caller 0xffffff80050dc7e9): "Machine Check at 0xffffff8005233b80, registers:\n" "CR0: 0x000000008001003b, CR2: 0xffffff807c64e120, CR3: 0x0000000008ae6000, CR4: 0x00000000001606e0\n" "RAX: 0xffffff809f20b0c8, RBX: 0xffffff8005233b80, RCX: 0xffffff809f20b0e0, RDX: 0xffffff8016fa2128\n" "RSP: 0xffffff809f20b018, RBP: 0xffffff809f20b130, RSI: 0xffffff809f20b0d8, RDI: 0xffffff8012216558\n" "R8: 0xffffff809f20b0f0, R9: 0xffffff809f20b0cc, R10: 0x00000000000001b0, R11: 0x000000006fe8f801\n" "R12: 0x0000000000000000, R13: 0xffffff8012216558, R14: 0x0000000000000001, R15: 0xffffff8012216950\n" "RFL: 0x0000000000000246, RIP: 0xffffff8005233b80, CS: 0x0000000000000008, SS: 0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/SourceCache/xnu/xnu-2422.100.13/osfmk/i386/trap_native.c:168
Backtrace (CPU 0), Frame : Return Address
0xffffff8079984ce0 : 0xffffff8005022fa9
0xffffff8079984d60 : 0xffffff80050dc7e9
0xffffff8079984ec0 : 0xffffff80050f3cff
0xffffff809f20b130 : 0xffffff80052ccc51
0xffffff809f20b440 : 0xffffff80052dc2cb
0xffffff809f20b570 : 0xffffff80052db999
0xffffff809f20b750 : 0xffffff80052d51be
0xffffff809f20bb90 : 0xffffff80052c8f26
0xffffff809f20bbe0 : 0xffffff80052c9222
0xffffff809f20bdc0 : 0xffffff80052b738d
0xffffff809f20bde0 : 0xffffff8005252dc3
0xffffff809f20be10 : 0xffffff800523419e
0xffffff809f20beb0 : 0xffffff800522b86c
0xffffff809f20bf60 : 0xffffff8005233089
0xffffff809f20bfb0 : 0xffffff80050d7127
BSD process name corresponding to current thread: kernel_task
Mac OS version:
13D65
Kernel version:
Darwin Kernel Version 13.2.0: Thu Apr 17 23:03:13 PDT 2014; root:xnu-2422.100.13~1/RELEASE_X86_64
Kernel UUID: ADD73AE6-88B0-32FB-A8BB-4F7C8BE4092E
Kernel slide: 0x0000000004e00000
Kernel text base: 0xffffff8005000000
System model name: MacBookAir6,2 (Mac-7DF21CB3ED6977E5)
System uptime in nanoseconds: 5438372137179
last loaded kext at 4979864129828: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7f88422000, size 49152)
last unloaded kext at 5147684239139: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7f88422000, size 32768)
loaded kexts:
net.telestream.driver.TelestreamAudio 1.1.0
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.iokit.IOBluetoothSerialManager 4.2.4f1
com.apple.driver.AppleHDA 2.6.1f2
com.apple.driver.X86PlatformShim 1.0.0
com.apple.driver.AGPM 100.14.15
com.apple.driver.ApplePlatformEnabler 2.0.9d1
com.apple.driver.AppleThunderboltIP 1.1.2
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.driver.AppleLPC 1.7.0
com.apple.driver.AppleCameraInterface 4.26.0
com.apple.driver.AppleIntelHD5000Graphics 8.2.6
com.apple.driver.AppleIntelFramebufferAzul 8.2.6
com.apple.driver.AudioAUUC 1.60
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.4f1
com.apple.driver.AppleBacklight 170.3.5
com.apple.driver.AppleMCCSControl 1.1.12
com.apple.driver.AppleUSBCardReader 3.4.1
com.apple.driver.AppleTopCaseHIDEventDriver 10.21
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.5.1
com.apple.driver.AppleAHCIPort 3.0.0
com.apple.driver.AirPort.Brcm4360 831.21.63
com.apple.driver.AppleUSBHub 666.4.0
com.apple.driver.AppleUSBXHCI 677.4.0
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.kext.triggers 1.0
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.driver.DspFuncLib 2.6.1f2
com.apple.vecLib.kext 1.0.0
com.apple.driver.X86PlatformPlugin 1.0.0
com.apple.driver.AppleHDAController 2.6.1f2
com.apple.iokit.IOHDAFamily 2.6.1f2
com.apple.driver.IOPlatformPluginFamily 5.7.0d11
com.apple.AppleGraphicsDeviceControl 3.5.26
com.apple.iokit.IOAcceleratorFamily2 98.20
com.apple.iokit.IOAudioFamily 1.9.7fc2
com.apple.kext.OSvKernDSPLib 1.14
com.apple.iokit.IOSurface 91.1
com.apple.iokit.IOBluetoothFamily 4.2.4f1
com.apple.driver.AppleSMC 3.1.8
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.4f1
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.driver.AppleSMBusController 1.0.11d1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.driver.AppleThunderboltDPInAdapter 3.1.7
com.apple.driver.AppleThunderboltDPAdapterFamily 3.1.7
com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.5
com.apple.iokit.IOSCSIBlockCommandsDevice 3.6.6
com.apple.iokit.IOUSBMassStorageClass 3.6.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.6
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.driver.AppleUSBComposite 656.4.1
com.apple.driver.AppleHIDKeyboard 170.15
com.apple.driver.AppleHSSPIHIDDriver 24
com.apple.driver.AppleMultitouchDriver 245.13
com.apple.iokit.IOAHCIFamily 2.6.5
com.apple.driver.AppleThunderboltNHI 2.0.1
com.apple.iokit.IOThunderboltFamily 3.2.7
com.apple.iokit.IO80211Family 630.35
com.apple.driver.mDNSOffloadUserClient 1.0.1b5
com.apple.iokit.IOUSBUserClient 660.4.2
com.apple.driver.AppleHSSPISupport 24
com.apple.driver.AppleIntelLpssSpiController 2.0.34
com.apple.driver.AppleIntelLpssGspi 2.0.34
com.apple.iokit.IOUSBFamily 677.4.0
com.apple.driver.AppleIntelLpssDmac 2.0.34
com.apple.iokit.IONetworkingFamily 3.2
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.11
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 23
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
com.apple.kec.pthread 1