Repair

Difficulty identifying SMD semis via markings
I've never had to look up a SMD semi before now. Unlike JEDEC codes, these less-than-brief alphanumeric codes have no standard that I can find. And if there's no manufacturer mark (or it has become illegible), there's no hope of finding a replacement. In my case: HFJ (the "J" is smaller than the others), 3... 29 May 2010 09:12

Pencil butane torch for Surface Mount desolder?
I've only used full size hot air gun and protective masking-off before. I prefer the short sharp shock of full size rather than the "proper" pulse jet type things, presumably for rework only really. Couldn't resist one in a pound shop, unbelievably precisely small spot of flame and also adjustable (upwards), amaz... 29 May 2010 13:33

Microcontroller for sale
I have 120 (new in tubes) MC68HC705P6ACDW Microcontrollers 8 Bit 2.1MHz 4.5K OTP 28-SOIC from a bankruptcy auction. I will sell them at $4.00 each. I want to sell them as sets of 10 to make shipping cost minimal. Shipping on 10 would be $3.50 USPS USA only(shipping on 1 is also $3.50). If shipping is other than... 27 May 2010 10:23

Surge Protectors
Are surge protectors based on grounding or diode clipping? - = - Vasos Panagiotopoulos, Columbia'81+, Reagan, Mozart, Pindus, BioStrategist http://www.panix.com/~vjp2/vasos.htm ---{Nothing herein constitutes advice. Everything fully disclaimed.}--- [Homeland Security means private fire... 8 Jul 2010 14:45

Peavey CS800S, slave amp 1997
Light weight as switch mode power supply. Not dared to power up yet but is there any problem concerning the power supply with runnung one power amp only, disconnecting the rails to the other amp, either for low power or high power audio throughput. How and what is the function of the 2x3 inch board on the casing b... 26 May 2010 06:58

Generic question
Last Winter I repaired a D board in a 32 inch Sony set. I replaced the two chips with DB versions and the set worked fine for 3 months. It eventually came back for an intermittent start up problem. It seems that at times it would just not power up with blink codes alternating between sometimes being 6 and at other ... 25 May 2010 13:32

Harman Kardon AVR210, no audio. Fixed.
Mark Zacharias wrote: "David Farber" <farberbear.unspam(a)aol.com> wrote in message news:4bbba75a$0$27750$bd467cd0(a)news.dslextreme.com... Mark Zacharias wrote: "David Farber" <farberbear.unspam(a)aol.com> wrote in message news:4bb7fa57$0$16970$bd467cd0(a)news.dslextreme.com... Mark Zacharias wrote: ... 25 May 2010 06:57

lead free solder
What happens if you use regular solder on something that was originally lead-free, or you get the lead free solder on a regular iron? I understand manufacturers keep separate lines as mixing the two is bad, but what about in the repair world? Does lead free solder mess up good quality tips or anything like th... 30 May 2010 20:52

JVC TK-885 CCTV camera repair manual?
Anybody have one to share or a hint where I could d/l one. Thanks, Jan/Finland ... 24 May 2010 17:56

5 Ghz Routers Causes SPAM
On 24/05/2010 02:55, takveen(a)gmail.com wrote: 5 Ghz Routers Cause Nausea& Dizziness - To You Too? The router shown in the figure is Linksys WRT600N Router, Not a real issue for this SPAMMING poster. -- Adrian C ... 24 May 2010 10:08