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Old 05-15-2016, 09:50 PM   #1
sherwind2010

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Rockford Fosgate Power 350S (Desperately in need of Repair)

I desperately want to repair this car amplifier!

I desperately ordered two 330uf 63v capacitors off ebay already.

Now I desperately need to find out that model these poor burnt out MOSFET are... if they are called MOSFET. MOSFET Q6 & Q7 busted & burnt!

If it is a good idea just to replace all them MOSFETS.

MEHSA thermal management system QM-1696r-I












Last edited by sherwind2010; 05-18-2016 at 05:54 PM.
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Old 05-18-2016, 05:23 PM   #2
sherwind2010

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I don't know if this helps, specs for the Rockford Fosgate Power 350S...

SPECIFICATIONS
Signal-to-Noise Ratio >100dB A-weighted
Crossover Slope 24dB/octave Butterworth
Crossover Frequency variable from 50Hz to 250Hz
Frequency Response 20Hz to 20kHz 0.5dB
Bandwidth 20Hz to 200kHz 3dB
Damping Factor @ 4Ω (at output connector ) >200
Slew Rate 30 Volts/ms
IM Distortion (IHF) <0.05%
Acceptable Signal Voltage Range Variable from 250mV to 6V (RCA)
Protection NOMAD - Internal analog-computer output protection
circuitry limits power in case of overload. Thermal
switch shuts down the amplifier in case of overheating.
Equalization (45Hz Punch Bass) Variable from 0dB to +18dB @ 45Hz
Input Impedance 20k ohms

Continuous Power Rating (RMS) - Measured at 14.4 Battery Volts
4Ω Load Per Channel 87.5 Watts x 2
2Ω Load Per Channel 175 Watts x 2
4Ω Load Bridged (Mono) 350 Watts x 1
Battery Fuse Rating (Amp) 30A

((The Amp was working with the broken power supply transistors up tell the reverse polarity, before the amp got really hot.))

Last edited by sherwind2010; 05-18-2016 at 06:34 PM.
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Old 06-30-2016, 04:17 PM   #3
sherwind2010

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I got the 350S Schematics & Partlist ^.^

PS: I need a IRFZ40... two of them

Last edited by sherwind2010; 06-30-2016 at 05:09 PM.
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Old 07-29-2016, 08:12 PM   #4
sherwind2010

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NOPE! MTP75N05HD TO-220 part I needed... Also MUR1620CTR needs to be replaced. Oops, bought IRFZ40 for nothing. XD
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