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hoanglucky

Member Since 24 Jul 2013
Offline Last Active Feb 01 2014 04:11 AM
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Topics I've Started

Problem with turn off transient

28 January 2014 - 11:52 AM

I repaired some old amp such as Crown 800, 1400, 2400, 3600. Some time, it's fault with turn off transient, it's "pop" very large for speaker, but I don't know why? Anybody could help me please!

Crown 5000VZ help!

24 July 2013 - 08:02 PM

I' ve a crown 5000VZ, but it 's damage 2 channel, when I 've removed all output transistor, I check all pre driver, driver transistor. it's OK. I check all resistor in module output, it's ok. I install module channel 1 to test voltage Vbe of driver ( I 've removed all output transistor, only driver transistor) but R520 and R521 is burnt. Vcc is not balance. Anyone had repaired a Crown 5000VZ, Please help me resolve that problem. How to check voltage driver transistor to install ouput transistor. I repair some Macrotech Crown( 800,1200,3600), normal I check voltage the leg E of driver before install the output transistors, it 's about - 0.55V. Crown 5000VZ is the same?