#1652

[@guilldea]

400 page service manual, tons of self tests, stands for when servicing the PCBs... Damn the design philosophy of the 80s was truly a thing of wonder

[@chongli297]

Yeah honestly. It sounds like they spent tons and tons of time designing that thing to be easy to troubleshoot!

[@JRJJ5077]

That's a brilliant idea with the PCB's vertical stands and long enough ribbon cables envelope like design, times when things were designed with serviceability in mind. 😯👍👍

[@____________________________.x]

Absolutely, a lost art for sure. Reminds me of all those car mechanic videos where they have to remove half the engine just to get a bendy spanner on a rotating wiggly offset extension just to reach a M2.5 offset Phillips flat head screw that seized before it left the factory because all the road salt gets funnelled to that one spot and they made the screw head out of painted cheese. Car designers should be made to change the oil filter and headlight bulb on any car they design, just to realise the suffering their brainlet design causes other people

[@tomallen6073]

Had a similar older unit we use for testing at work die, my company(large electronics manf.) had a hell of a time getting it fixed.

[@fredmitchel1236]

Great progress... May an output transistor be fried and that a replacement I available.... Good job finding the bad electrolytic caps...

[@ivolol]

Designed for servicing! Must be a product from the future!

[@fredmitchel1236]

Remarkable...400 pages. GOOD job HP tech writers... Sounds like a slight unstable design.. Thanks for showing us....and perhaps facing a situation like the Japanese O scope....

[@IMSAIGuy]

you had to bring up the Kikusui 😕

[@RyanUptonInnovator]

Great stuff.

[@pietpaaltjes7419]

7:48 nice pi length 😉

[@henriquecasonatto8881]

great stuff as always. hey please make a video about UJT transistor. i came acrros some circuits using it, and i think is kind weird deserves a video... (sorry for english. greeting from brazil)

[@IMSAIGuy]

the unijunction seems to be like a dodo bird now

[@georgesampson4714]

Many times faults in old equipment are traced to electrolytic capacitor failures. Since this is a known failure mode does modern manufacturing take this into account and design for a specific minimum lifetime or do they just throw something in and hope that the device will last longer than what people care about? I quit buying HP computers because of this very problem.

[@IMSAIGuy]

all electrolytic capacitor will die in the future

[@Kae6502]

@7:08 "That's a good sine" ... ummm... ;)

[@____________________________.x]

*sign 😸