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HFI1500D Power Fets Blow After Remote is Disconnected
HFI1500D Power Fets Blow After Remote is Disconnected
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Old 6th September 2019, 08:37 AM   #21
Perry Babin is offline Perry Babin  United States
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Location: Louisiana
Where are you placing the black meter probe?

Does the voltage on pin 12 drop from 12v to 0v IMMEDIATELY when remote is removed.
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Old 6th September 2019, 08:41 AM   #22
djeokis is offline djeokis
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Ground. Terminal Post of the Amp.
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Old 6th September 2019, 08:54 AM   #23
djeokis is offline djeokis
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Voltage is15V, then when i remove remote, drops to 0.35v after that starts to drop slower... On pin 12
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Old 6th September 2019, 09:00 AM   #24
Perry Babin is offline Perry Babin  United States
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Are you using your meter or does your scope have a digital readout?
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Old 6th September 2019, 09:15 AM   #25
djeokis is offline djeokis
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I have both connected, using only one lead. for the positive lead.
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Old 6th September 2019, 09:20 AM   #26
djeokis is offline djeokis
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Going to leave this as To be continued, until i receive parts, i believe i just fried the IC, shorting it by accident... Once i get it, lets hope it fixes my issue... I'll keep you post it... I really appreciate the time and help. Many Thanks.
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Old 6th September 2019, 02:26 PM   #27
Perry Babin is offline Perry Babin  United States
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Location: Louisiana
Did you slip?

How are you accessing the pins? Right-angle probe or driver board connected to the main board via wire jumpers?

Only buy parts from authorized distributors.
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Old 13th September 2019, 11:16 PM   #28
djeokis is offline djeokis
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Hello. no, i shorted pins 7 and 8.. burned out Q2...Replaced IC 7500 and the Q2, now the green light turns on, now going to check the if it has negative pulse on pins 3 and 4. added jumper cables to board, to avoid slips or shorts ( will Try )
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Old 15th September 2019, 01:19 AM   #29
djeokis is offline djeokis
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UPDATE : Got the amp to work... Thank you for you help Perry, you guided me to the location that i ignored, assuming that it was working properly. Thread can be closed.

Thank you.
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