Author Topic: Marantz Model 1060 Amplifier transistor equivalent  (Read 2608 times)

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Offline RutherbergTopic starter

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Marantz Model 1060 Amplifier transistor equivalent
« on: April 13, 2018, 03:43:20 pm »
Hi,

I'm repairing a Marantz 1060 amplifier with a nasty noise on one channel. I isolated the fault, a pair of transistors, 2SC1000 and 2SC493 (H406, H408)
What modern equivalent could I use to replace those ? I attached the schematic.

Thanks
 

Offline rsjsouza

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Re: Marantz Model 1060 Amplifier transistor equivalent
« Reply #1 on: April 13, 2018, 03:52:28 pm »
If NTE is to be trusted, they claim the following:
2SC1000 - NTE199
2SC493 - NTE87
Vbe - vídeo blog eletrônico http://videos.vbeletronico.com

Oh, the "whys" of the datasheets... The information is there not to be an axiomatic truth, but instead each speck of data must be slowly inhaled while carefully performing a deep search inside oneself to find the true metaphysical sense...
 
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Offline oldway

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Re: Marantz Model 1060 Amplifier transistor equivalent
« Reply #2 on: April 13, 2018, 08:39:11 pm »
I often use bc547 and bc557 .... Be aware that the sequence of pins is not the same but just do a little acrobatics to place these transistors properly.

At least, with the BC547 and 557, we are sure that it is not about counterfeit transistors and they are easily available in Europe.

EDIT: This is a very common defect on the 70s Marantz.
I advise you to also replace the equivalent transistors of the other channel because there is a strong risk that the transistors of the other channel present the same defect in a short time.
« Last Edit: April 13, 2018, 08:46:02 pm by oldway »
 
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Offline RutherbergTopic starter

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Re: Marantz Model 1060 Amplifier transistor equivalent
« Reply #3 on: April 14, 2018, 10:19:41 am »
Thanks for the replies.

I will go for the BC5.. solution on both channels, have it in stock.

Thanks !
 


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