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Hello, Sorry you're having problems. A 6 red and 1 yellow blinking light code directly indicates "Lamp failure". Since you stated that you've replaced the lamp only 6 months ago, I am assuming that you purchased a $30 Amazon or Pureglare Lamp and not a $110 Osram (OEM) lamp, is that correct?
The only possible causes of that code are a faulty lamp or the ballast inside of the set has failed. However if you did not purchase the OEM lamp (which is the only one that Mitsubishi recommends for this set- as the gas charge that sparks the lamp is of a tighter tolerance) then you would want to replace the lamp with the genuine replacement Osram lamp at the link below to fix the issue:
The lesser priced lamps for sale all over the internet are simply not built to Mits specs and the gas prematurely leaks causing it to no longer spark and triggers a faulty lamp code (which is the 6 red 1 yellow blink code).
However if you used the Osram lamp when you replaced it, then you likely have a ballast failure in the set.
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