Phase Linear UPA424CS Car Audio Amplifier "lost signal amp" Questions

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Question about Car Audio & Video

1 Answer

...wire the red indicator lost signal led on the amp lights up even though the power to the amp is there. Suggestions? could be an internal problem such as a relay or resistor or something of the ...

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Question about Jensen Car Audio & Video

1 Answer

lost one channel. I verified it wasnt a speaker by switching speakers wires on the amp to the good channel. I checked the 2 fuses on the amp...they are good. Do you have a wiring diagram before I tear

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Question about Jl Audio Car Audio & Video

1 Answer

...lost the left side channel of my JL300/4 amp what can I do I'm based in the uk. If both the left front and left rear channels are out, reverse the RCA cables to determine if the problem is signal ...

Question about American Pro Car Audio & Video

2 Answers

lost one channel out of four im pretty sure it can be repaired but i need help, its a 4 channel amp and the other day one of the channels went out.only three work now.how can i fix the problem?? thanx

Question about Kenwood Car Audio & Video

1 Answer

...lost bass ckd again red power lite on blue lite off. shut down and it turned on again had good bass and red and blue lite. Remote wire good ground good fuses good, amp is a little dusty any help is ...

Question about Sony Car Audio & Video

2 Answers

...signal from your RCA inputs (maybe by substituting another amp) and make sure that you haven't lost the ground on your RCA's also. If ALL of these things are indeed good, then you have a problem with ...

Question about Phase Linear Car Audio & Video

3 Answers

signal is comming from the amp. I had the same problem with mine but i had the 224 version first worked nice just for a small system but i just got this one today and i hooked it up to a small sub box

Question about Jl Audio Car Audio & Video

1 Answer

...lost cause? Sounds like it should be an easy task (fitting the sub), but you will have to make sure that the JL 8" woofer has at least 1" to 1.5" in front of it to enable the sub cone to move freely ...

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