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Old 23rd June 2008, 12:17 AM   #1
onarush is offline onarush  Puerto Rico
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Default lanzar la670 schematics

Hi everyone I'm kind of new in this forum but it really seems like a great community, i was hoping you could help I'm searching for the schematics for a Lanzar la670 250w x 4 amp, i would really appreciate if anyone could help me, thanks in advance to whom might help.
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Old 23rd June 2008, 12:41 AM   #2
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Lanzar or Legacy?

What's wrong with the amp?
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Old 23rd June 2008, 01:14 AM   #3
onarush is offline onarush  Puerto Rico
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Default sorry, and thanks for the fast reply!

it says legacy and it has 2 blown transistors but i don not know which transistors should i use and they me that if it was possible to get schematics so that i put on the right transistors, ps sorry for my English
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Old 23rd June 2008, 01:44 AM   #4
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I don't have the schematic.

What are the numbers on the blown transistors?
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Old 23rd June 2008, 07:46 AM   #5
onarush is offline onarush  Puerto Rico
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the transistors are so burned that they don't have any numbers there are 4 transistors 2 of them blown but I really don't know if there the same transistors
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Old 23rd June 2008, 09:03 AM   #6
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If the center leg of the 2 un-burned transistors goes to one primary winding of the transformer and the center leg of the 2 burned transistors goes to the other primary winding, they are the same part number. You need to replace all 4 of them.
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Old 23rd June 2008, 12:40 PM   #7
onarush is offline onarush  Puerto Rico
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ooh ok, I will try that today, I will let you know my results, really thanks for the and specially the fast reply, I'm kind of a noob in repairing amps so really thank you for the help one more thing I noticed I has thermal compund but it is old I should replace it right?, by the way I'm loving this forum
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Old 23rd June 2008, 04:53 PM   #8
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Yes. Remove all of the old compound from the transistors and the heatsink and apply new compound.
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