Tektronix 7613

Please refrain from ageism and age-related value judgments; old to you may be yesterday to someone else.

The 7000 series is highly maintainable and for the most part well- engineered. Repair it (get the manuals) and consider yourself amongst the fortunate to use a quality instrument from this series.

Regards,

Michael

snipped-for-privacy@aol.com wrote in news: snipped-for-privacy@x40g2000prg.googlegroups.com:

the threaded studs for those TO-3 xstrs,soldered to the regulator PCB develop cracked solder joints,and the IC socket on the same board caused problems;it was removed and the package soldered in,in later production.Some matal film resistors in the reference dividers would open. there are decoupling caps on the scopes interface board that go bad,cause PS problems. a major problem in the 7000 series was "gold-dot" connectors on the ends of the ribbon cables.They were a source of many intermittents. We used to replace all the ribbon cables when a scope had them,the bad connectors were mixed in with good ones.you can tell the bad ones by their pale color compared to the gold plated connectors.

By now some of the big filter caps on the cap-rectifier board will be drying up or near failure.

all the PS supplies reference to the -50V supply.You need a PS schematic.

It still makes a good 100Mhz scope,even without the storage. Get the 7A26 and 7B53A plug-ins for it.they were the best ones for that scope.

Get a TEK service manual for the scope.

Get the pdf manual here:

Jorgen dj0ud