Re: [Ql-Users] Blowtorches
On 12 May 2012, at 01:05, John Alexander acontractor...@yahoo.co.uk wrote: I had hundreds of memory boards from some mainframe and stripped off kilos of chips. Back in the day of 41256 RAM chips almost every one had a set of pulls from myself. Kept me in University ...Cheers guys John A Ah mainframes. I remember an auction in the 90s where someone arrived with two large box vans and bought a vast qty of mainframe equipment for maybe £150. He was the only bidder. Each item went for under £10. Tony -- t...@firshman.co.uk http://firshman.co.uk Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 Skype: tonyfirshman TF Services, 29 Longfield Road, Tring, Herts, HP23 4DG --- ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Blowtorches
On Sat, May 12, 2012 at 1:59 AM, Tony Firshman t...@firshman.co.uk wrote: Ah mainframes. I remember an auction in the 90s where someone arrived with two large box vans and bought a vast qty of mainframe equipment for maybe £150. He was the only bidder. Each item went for under £10. Tony That might have been me! I bought up a bunch of Burroughs mainframes for £150 each in the mid-90s, then parted them out to various defense contractors for a HUGE profit. I think I made about £30,000 from that. Those were the days Dave ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Blowtorches
I had hundreds of memory boards from some mainframe and stripped off kilos of chips. Back in the day of 41256 RAM chips almost every one had a set of pulls from myself. Kept me in University ...Cheers guys John A --- On Wed, 9/5/12, Tony Firshman t...@firshman.co.uk wrote: From: Tony Firshman t...@firshman.co.uk Subject: [Ql-Users] Blowtorches To: ql-us...@q-v-d.com Date: Wednesday, 9 May, 2012, 14:09 I see from the current issue of Quanta that a joky quote of the show referring to Lee's removal of components from pcbs using a blow torch. This is not a joke. I too used a purpose built 2kw hot air gun to selectively remove components from QL pcbs. This I suspect is similar to the 'blow torch' Lee used - nothing like the gas powered paint strippers one no doubt imagines. After much practise I managed to remove a whole dodgy std 68008 socket on its own. A quick re-blast on the pads and the new turned pin socket popped in without soldering. It was not possible to detect that it was not the original soldering. I must have removed thousands of components in this way, including the uhf modulator. Tony -- t...@firshman.co.uk http://firshman.co.uk Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 Skype: tonyfirshman TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Blowtorches
On 09/05/2012 10:07, Dilwyn Jones wrote: Norman Dunbar wrote: My image when I hear the word blowtorch is of my dad filling his with paraffin and pumping it for what seemed ages to get some pressure up and then a huge blue flame! That was my reaction when I heard Lee make the remark at the Quanta Workshop in Manchester. Actually, the notion of whacking the board against something to make the chips/sockets fall out after heating was what tickled me most! I have managed to fry a few components using just a soldering iron over the years, never mind a blowtorch :-) Dilwyn Jones At work we had multiple de-soldering tools which fitted on a soldering iron and had holes linked to a suction machine; the tool was applied and it left it solder-free to then just pull out (usually). In the lab (and at home) it was common to work pin by pin melting the solder and then knocking sharply when most of the solder would come out; it was practically as good as a suction de-solderer and one didn't have to re-load it. Bryan H ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
[Ql-Users] Blowtorches
I see from the current issue of Quanta that a joky quote of the show referring to Lee's removal of components from pcbs using a blow torch. This is not a joke. I too used a purpose built 2kw hot air gun to selectively remove components from QL pcbs. This I suspect is similar to the 'blow torch' Lee used - nothing like the gas powered paint strippers one no doubt imagines. After much practise I managed to remove a whole dodgy std 68008 socket on its own. A quick re-blast on the pads and the new turned pin socket popped in without soldering. It was not possible to detect that it was not the original soldering. I must have removed thousands of components in this way, including the uhf modulator. Tony -- t...@firshman.co.uk http://firshman.co.uk Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 Skype: tonyfirshman TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Blowtorches
Evening Tony, On 09/05/12 14:09, Tony Firshman wrote: I see from the current issue of Quanta that a joky quote of the show referring to Lee's removal of components from pcbs using a blow torch. This is not a joke. I too used a purpose built 2kw hot air gun to selectively remove components from QL pcbs. This I suspect is similar to the 'blow torch' Lee used - nothing like the gas powered paint strippers one no doubt imagines. My image when I hear the word blowtorch is of my dad filling his with paraffin and pumping it for what seemed ages to get some pressure up and then a huge blue flame! It was a big brass thing with a decent reservoir for fuel, taps and pumps, possibly a Primus but I'm not sure. I think he still has it, somewhere! We used to to melt lead for fishing weights. Also melted a few of my mothers old pans, aluminium I think. Cheers, Norm. -- Norman Dunbar Dunbar IT Consultants Ltd Registered address: Thorpe House 61 Richardshaw Lane Pudsey West Yorkshire United Kingdom LS28 7EL Company Number: 05132767 ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Blowtorches
On 09/05/2012 20:34, Norman Dunbar wrote: Evening Tony, On 09/05/12 14:09, Tony Firshman wrote: I see from the current issue of Quanta that a joky quote of the show referring to Lee's removal of components from pcbs using a blow torch. This is not a joke. I too used a purpose built 2kw hot air gun to selectively remove components from QL pcbs. This I suspect is similar to the 'blow torch' Lee used - nothing like the gas powered paint strippers one no doubt imagines. My image when I hear the word blowtorch is of my dad filling his with paraffin and pumping it for what seemed ages to get some pressure up and then a huge blue flame! It was a big brass thing with a decent reservoir for fuel, taps and pumps, possibly a Primus but I'm not sure. I think he still has it, somewhere! We used to to melt lead for fishing weights. Also melted a few of my mothers old pans, aluminium I think. Cheers, Norm. apologies for getting OT here but I remember (just) those and I have a pump from one in a shed (well I'm sure I'll use it one of these days) also we had lamps of similar technology, you pumped them up then lit the mantle a delicate lace like item that had to be burnt off when new, interestingly I learnt a lot later that said mantle were highly radioactive and probably still are All the best - Bill (typing whilst emitting a strange fluorescent blue glow) ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] Blowtorches
Norman Dunbar wrote: My image when I hear the word blowtorch is of my dad filling his with paraffin and pumping it for what seemed ages to get some pressure up and then a huge blue flame! That was my reaction when I heard Lee make the remark at the Quanta Workshop in Manchester. Actually, the notion of whacking the board against something to make the chips/sockets fall out after heating was what tickled me most! I have managed to fry a few components using just a soldering iron over the years, never mind a blowtorch :-) Dilwyn Jones ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
