Hello, I have amplifier Soundstream P204e USA series. Recently it stopped working, when checking found that burned down two transistors part no ndp6060 and two transistors 2SA1562. Can't find the analogues of those of these transistors, what can be replaced and may have circuit for this amplifier?
For the driver transistor, the BD140 should be a good sub but you'll have to install it facing the opposite direction since the pin configuration is reversed.
The ndp6060 is still available.
The ndp6060 is still available.
Thanks for the help, I'll try to find BD140 and part no ndp6060 we cannot get, if only in order to China, but there quality is you-know-what. I can replace the part no ndp6060 on IRFZ48N?
Sorry for my English, I translate in online the translator.
Sorry for my English, I translate in online the translator.
The Z48 should be OK. The driver transistor isn't critical. If the BD140 isn't readily available, I'm sure there are many others that will work.
Hi,
I replaced the transistors on 2sa1562 Russian analogue КТ639В, 2 pieces part no ndp6060 replaced the IRFZ48N. Instead of fuses connected the lamp, when switched on, the amplifier is operating normally, nothing is heated, but if you turn up the volume, then begin to heat output part no tip102 and TIP107 transistors on the first channel and the lamp starts to light up.
I replaced the transistors on 2sa1562 Russian analogue КТ639В, 2 pieces part no ndp6060 replaced the IRFZ48N. Instead of fuses connected the lamp, when switched on, the amplifier is operating normally, nothing is heated, but if you turn up the volume, then begin to heat output part no tip102 and TIP107 transistors on the first channel and the lamp starts to light up.
If you don't have the output transistors clamped tightly to the heatsink, you can expect all channels to heat up if they're driving speakers.
Yeah I didn't charge fastened to the radiator when tightened, the lamp begins to burn already at a greater volume. This is normal, if you use a fuse instead of the lamp everything will be fine?
It's normal for a lamp used as a current limiter to become more brightly lit as the amp draws more current.
I don't understand #8.
I don't understand #8.
That's up to you. I recommend against it. It insulates the windings which can make the transformer run hotter. It also make repairing minor problems more difficult. Unless the amp is going to be mounted where it's audible, I wouldn't do anything other than maybe move the windings slightly to see if that helps.
I'm assuming that there is no problem with the drive circuit, snubbers, etc... making the transformer noisier than normal.
I'm assuming that there is no problem with the drive circuit, snubbers, etc... making the transformer noisier than normal.
Hi all, not had time to write. I have one more question from the past owner on this amp the fuses are blown, he replaced them, but they immediately burned out. He gave this amp to repair shop after repair it worked for half a year and came to me with the breakdown described in the beginning of this post. When I opened it it turned out that in the fourth channel there is no complementary pair part no TIP102 and TIP107 and is not regulated by a high pass filter (photo attached). Does anyone know why this was done in the repair shop?
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The pot may not rotate because the individual pots are out of time (different rotation angle). You'd have to ask whoever removed the parts to find why they did it. Replace them to see what happens.
Ask the master carried out the repair is not possible as it is located far from me and I can't get ahold of him. How will it affect sound quality no transistors? The high pass filter and probably not needed if you use the filter the car stereo?
If the missing transistors are parallel to the installed transistors and the channel is functioning, the channel will not be able to withstand lower impedance loads reliably. If you replace the missing transistors, you also have to replace the transistors that are connected in parallel with them. Parallel transistors are going to share the load more evenly if they are closely matched. Having matching date codes generally means that they are relatively closely matched.
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