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Author Topic: Otari MX5050 2T right channel no signal  (Read 3646 times)

Offline Shelby 412

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Otari MX5050 2T right channel no signal
« on: July 18, 2014, 08:26:38 AM »
I just picked up an Otari MX5050 1/4" half track machine. The problem is no signal passes at all on the RIGHT channel. Nothing in and nothing out. Also when I press the Test OSC button, it only generates a signal tone on the LEFT channel, and only the LEFT VU meter moves, no movement on the RIGHT VU meter.

What could be some of the causes? I'm not a tech, but I have some ability to be a home techy. Trying to determine if I can fix this with some cleaning or mild soldering? Or if it needs to go to the shop.

TIA

Offline Shelby 412

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Re: Otari MX5050 2T right channel no signal
« Reply #1 on: July 18, 2014, 09:15:18 AM »
Update

I got the machine to play both channels by cleaning the FT/2T PB head switch!

Also I tried cleaning the input XLR jacks but still no input signal into the RIGHT channel

So the focus is now on - no input signal to the RIGHT channel 2

Offline Listens2tubes

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Re: Otari MX5050 2T right channel no signal
« Reply #2 on: July 30, 2014, 08:43:40 PM »
Try cleaning the internal speed (L-H on the main board) as well. I have solved many problems just by cleaning that switch.
Neal - Ampex Fineline F-44, 3 - Otari MX5050BII-2, Revox A77 Mk II , Teac A 4010s, 4070, Sony TC102A, Magnecord 1020, Systemdek IIX/Dynavector Karat 17D2MKII, CEC CD3300 CDP, K Works NanoMax DAC, Van Alsine Transcendence Eight+ tube preamp, Dynaco MkIV amp pair, Paradigm Reference Studio 100 v1