AudioBahn A2300HCT no sound
Hi all the blue lights show up on the amp, however i do not have any sound coming from the amplifier. I was running a orion hcca sub of the amp on a low voume when i heard a crack sound and could smell some smoke, However none of the fuses popped. Does anybody know where i can get a schematic diagram from?
Car Audio & Video - AudioBahn - A2300HCT Car Audio Amplifier
Answers & Comments
Generally, if the amplifier smokes, the power supply FETs have failed.
Many times, the output transistors fail and that causes the power supply FETs to fail.
Audiobahn won't release schematics. The amplifiers are relatively simple and a schematic isn't generally required.
If you know how to check the transistors, check them to determine the severity of the damage. If you don't know how to check them, read through the following page following all links provided.
Basic Amplifier Repair
Let me know if you have any other questions.
Those are the power supply FETs. IRFZ48V is the part number. The circuit board designation 'Q' prefix tells you it's a transistor. The 'P' suffix means it's a power supply component.
At the very least, you'll have to replace ALL 8 on the side with the burned transistors. If there are burned transistors on both sides, you must replace all 16 of them.
You need to check the TIP35Cs and 36Cs to see if any are shorted. If any shows a short between the 2nd and 3rd legs, it (or one in parallel with it) is shorted. All that appear to be shorted in the board must be replaced (even though only one of the parallel group may be shorted).
Before replacing any parts, you MUST read and 'understand' the information in the yellow box on the basic repair site I posted. If you don't, you will almost certainly destroy the new components.
The following is probably a better source.
IRFZ48PBF - Farnell
Did you check the output transistors yet?