Mcintosh MA5100 - UK Vintage Radio Repair and Restoration Discussion Forum

Safgrantham · 10th Jul 2017, 2:13 pm

Hi I have one of these amp for repair, and need the output transistors Q216,Q218 and Q220. The manual I have gives only part numbers and am not able to read the letters on the said transistors on either channel can any one please help. I have spent a lot of time just getting it back working to only find out after a couple of hrs one channel goes distorted. Replacing transistors from other channel moves fault. Thanks Stephen.

😀

ms660 · 10th Jul 2017, 3:12 pm

According to web gossip the output pair can be subbed with MJ15003's, I don't know about the drivers.

Lawrence.

Safgrantham · 11th Jul 2017, 8:52 am

Thanks I will give them a try.
Stephen😀

10th Jul 2017, 2:13 pm	#1
Safgrantham Triode Join Date: Sep 2015 Location: Grantham, Lincolnshire, UK. Posts: 22	Mcintosh MA5100 Hi I have one of these amp for repair, and need the output transistors Q216,Q218 and Q220. The manual I have gives only part numbers and am not able to read the letters on the said transistors on either channel can any one please help. I have spent a lot of time just getting it back working to only find out after a couple of hrs one channel goes distorted. Replacing transistors from other channel moves fault. Thanks Stephen. 😀

10th Jul 2017, 3:12 pm	#2
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Mcintosh MA5100 According to web gossip the output pair can be subbed with MJ15003's, I don't know about the drivers. Lawrence.

11th Jul 2017, 8:52 am	#3
Safgrantham Triode Join Date: Sep 2015 Location: Grantham, Lincolnshire, UK. Posts: 22	Re: Mcintosh MA5100 Thanks I will give them a try. Stephen😀