Hi, Does anyone know of a way to to know what the locations of the TIP35C and TIP36C are on this amplifier?
Quick story of the amplifier: The amplifier was given to me because it stopped working due to overheated TIP35/36 which also burned the IRFZ48N transistors on the power supply. The previous owner tried to repair it but did not finish it and doesn't remember what the placements are for the output transistors. I was also told that the thermal protection failed to react to the overheating.
SPL Gorilla 1600/4 4 channel amplifier
4x IRFZ48N
4x TIP35C
4x TIP36C
1x Mospec U1620A/U1620C each
1x UTC TIP41CL/TIP42CL
Is it possible to use the tip 41 and 42 to find the locations? I noticed that the TIP 42 says negative voltage ratings while the TIP 41 gives Positive voltage ratings.
First image power supply transistors go on far left and all outputs on top and right side.
Quick story of the amplifier: The amplifier was given to me because it stopped working due to overheated TIP35/36 which also burned the IRFZ48N transistors on the power supply. The previous owner tried to repair it but did not finish it and doesn't remember what the placements are for the output transistors. I was also told that the thermal protection failed to react to the overheating.
SPL Gorilla 1600/4 4 channel amplifier
4x IRFZ48N
4x TIP35C
4x TIP36C
1x Mospec U1620A/U1620C each
1x UTC TIP41CL/TIP42CL
Is it possible to use the tip 41 and 42 to find the locations? I noticed that the TIP 42 says negative voltage ratings while the TIP 41 gives Positive voltage ratings.
First image power supply transistors go on far left and all outputs on top and right side.
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If all of the output transistors read essentially 0 ohms from their emitter terminals to the speaker terminal, the collectors of the TIP35s will directly connect to the positive rectifiers (diodes on rectifier pointing inward).
Ok, I found the locations of the outputs but before I install them is it possible to turn the amp on with just the power supply transistors connected and no outputs? I want to make sure the problem is gone before I install more parts.
It is generally safe to power up without the outputs but there's always the possibility that a particular amp design could act differently. Removing the rectifiers makes it less likely that damage could be done without the outputs.
Well I powered the amp with no outputs and all 4 of the just installed IRFZ48N blew at 12.65V however at 11.99 volts they only got hot.
The drive circuit is likely defective.
When testing, you have to take special precautions (current limiter or 10 amp fuse, all transistors clamped tightly to the heatsink...). This is covered on the basic amp repair page.
When testing, you have to take special precautions (current limiter or 10 amp fuse, all transistors clamped tightly to the heatsink...). This is covered on the basic amp repair page.
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