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 New member from the sunny north
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 Return to top of page · Post #: 1 · Written at 10:23:28 PM on 25 June 2018.
Bignumbas's Gravatar
 Location: Bundaberg, QLD
 Member since 25 June 2018
 Member #: 2258
 Postcount: 3

my name is mark, started life as a Technician in Training with the PMG back in the early 70`s.
Been in IT for the last 35+ years but apparently unemployable now due to lack of knowledge ;)
Currently gone back to my roots doing electronic repairs and valve equipment.
Have been restoring and modding old games consoles and 8 bit computers, crt`s etc
Old stereo equipment, TV`s as well, I need more space!
Love the new gen single board computers like raspberry pi`s, have a media network setup at home with them.
I really like the emulation scene as well.
Currently I am volunteering and am a Sys Admin managing virtual servers on virtual networks with cloud based office365.
I also do temp jobs doing IT work.
Currently delving into smd repairs as well (you have to today)
I will post some of my projects soon like my restored 1958? Servicom CRO


 Return to top of page · Post #: 2 · Written at 10:44:31 PM on 25 June 2018.
GTC's avatar
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6010

Welcome to V-R.

 Return to top of page · Post #: 3 · Written at 11:32:33 PM on 25 June 2018.
Brad's avatar
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6348

Currently delving into smd repairs as well (you have to today)

Not bad work providing one can see well. My eyes used to be quite good, especially with low light in people's roof spaces doing electrical work. I need glasses almost to see my belly button these days.

There was a recent discussion about SMD components and I commented on the frustrations with dealing with SMD PCBs and lead-free solder, which sets too quickly to be able to unsolder components without overheating the board and lifting the tiny tracks that are on them. One case in point was Ericsson/Aastra/MItel DECT phones which are used inside buildings for mobile communication.

Ericsson DECT Phone

There's nothing really user-replaceable here but on the other side of the board there is the phone's screen and microphone, both of which are weak points on these phones. The microphone sits in a rubber sleeve which fits snuggly into the front half of the case - bad design, as it jars the microphone when the phone is dropped, and these get dropped with monotonous regularity. Sometimes to the point where the screen is also cracked.

Sometimes I can fix the microphone by removing the rubber sleeve and gluing the microphone to the board once it's been resoldered, with some normal tin/lead solder. The screen is connected with the familiar clear orange ribbon cable. Forget it. I've tried a dozen times to perfect the replacement of these but the result is just too ad-hoc for it to be reliable and in a hospital, we need phones to work all the time. I then have to programme and issue a replacement phone.

A valve a day keeps the transistor away...

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