Fixed my ProView 19" crt Monitor

Well done Jason ! Always gratifying when something like that works out, and good to have saved it from landfill, if nothing else.

Arfa

Dry joints seem to be one of the very common faults modern gear seems to fall prey to - I wonder if they still have people inspecting and correcting the soldering these days.

Many years ago I spent a few days on a production line 'dryjointing' circuit boards after they came through the solder bath. Mongrel of a job, but when you are young you do what you are told.

The girls that did this on a day to day basis complained of sore eyes from the glare.

Perhaps things have changed

David

"David" wrote in message news: snipped-for-privacy@news.bigpond.com...

Only for the worse I'm afraid, David. It's all lead-free solder now, and dry joints are a bigger problem than they they have ever been in the past - even back to the early days of printed circuit introduction, when the technology of automated soldering was young and immature ...

The problem is made doubly bad by the utterly different characteristics of a lead-free bad joint. It is very typical for a joint to go intermittent completely randomly, but not be able to be provoked by physical disturbance, heating or freezing, and yet when you actually find the little mutha, it will often be such a bad joint that the solder has not stuck to the component leg at all, and you can actually pull it out of the board. Apart from that, you can no longer spot a bad joint at twenty paces, as you could with leaded solder. With lead-free, *all* joints look bad to the traditionally trained eye ...

Arfa

dry

ven

gy

f a

ce,

ld

AMEN!!!

HOME PAGE:

--------------------------------------------------

dry

even

technology

disturbance,

could

With the recent very cold spell recently in the UK do you expect a rush of lead-free tin-pest intermittants in the coming weeks? Even if the mediaeval organ builders knew not of allotropes , they knew tin organ pipes would crumble to dust in the little ice age era.

Re the OP the signature is slow changes , usually indicating fault up around the CRT neck

-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on

Just researching for timeplot for degree of tinpest v temp (av) v temp (min)

-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on