Mac Tools Et 955 Manual

I have an old Mac Tools ET955 multimeter. It is also identical to a unit provided by Matco. The circuit board has the inscription 'Actron 400-1486' on the solder side. The problem is it constantly displays the count of '23' or '2.3' or '.23' with nothing connected, depending on the range selector. A 9-volt battery displays '+14v' or '-24v' depending on polarity. Adjusting the pots has no effect. I removed the MM5601BN quad 2-input NOR IC and the 7555 timer and the display reverted to all zeroes. So I assume either the 7555 timer chip or the 5601 chip is bad - not sure.
Anyway, does anyone have any suggestions on what could be the problem and where I could get a schematic and repair manual for the unit. I assume it is American made.
Thanks.

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Mac Tools Et 955 Manual Download

You are bidding on the following item: Mac Tools ET-920 Tach-Dwell-Volts-Ohms-Amps meter in case w/ cables and manual. This is being sold as collectable vintage tool. FREE SHIPPING!!!! The condition of the item is as follows: Used and untested. This is a vintage tool and it does show some minor signs of age. This unit has not been tested and is being sold as a vintage display piece. 14003518-1 CJG Please read the following before bidding: We are a new store so this is a new eBay account. We have been selling item on eBay for the last 11 years and we always strive to ensure that our feedback scores were in the top 99% over the 11 year span. We guarantee that you will be satisfied with our customer service.It is very important to us that we receive feedback, if you do have a complaints with anything at all, please contact us so that we can fix the problems for you. We are a business and our hours of operation are: Monday - Friday, from 9:30 a.m. until 6:00 p.m., Saturday from 9:30 a.m. until 5:30 p.m. (ALL TIMES ARE E.S.T.) Please direct your questions within our business hours for a fast response. Some payments may take up to 5 days to process Some items may take up to 10 days to ship.

Mac Tools Et 955 Manual Pdf

Find many great new & used options and get the best deals for Mac Tools ET955 Digital Multimeter DVOM With Soft Case at the best online prices at eBay! Free shipping for many products! Mac Tools® Diagnostic line of products are capable of performing critical diagnostics, reprogramming and quick code information. Show All Diagnostics and Testing Products Code Readers.

Mac Tools Et 955 Manual Downloads

1. Oct 10, 2013  I have an old Mac Tools ET955 multimeter. It is also identical to a unit provided by Matco. The circuit board has the inscription 'Actron 400-1486' on the solder side. The problem is it constantly displays the count of '23' or '2.3' or '.23' with nothing connected, depending on the range selector.
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