Quote:
Originally Posted by MarkS57
You know, if the transistor equipment has regulators in the power supply, that's probably very accurate. Looking at the 19's schematic, doesn't look like it does. It's a fairly beefy piece of equipment. But why chance it. The 17 DOES have regulators.
If you don't want to plug them in & turn them on, look up a reliable shop- probably your best bet. 
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A DBT will protect older solid state stuff when powering up after long storage or repairs. Thats what most techs use on gear from this era.