Repair

continuous action solder sucker
I'm attempting to fabricate a continuous action solder sucker along the lines of those used at work when repairing circuit boards. They were fast, clean, easy to use and prevented damage to the circuit boards from excessive prolonged heat. Unfortunately I'm now retired and the factory work has all been outsou... 2 Jul 2010 02:36

Notebook freezing when connected to external power supply
On 8 May, 11:57, Mike De Petris <mikedepet...(a)gmail.com> wrote: On Apr 24, 9:48 pm, Mike De Petris <mikedepet...(a)gmail.com> wrote: On Apr 24, 8:30 pm, Meat Plow <mhyw...(a)yahoo.com> wrote: On Fri, 23 Apr 2010 13:00:57 -0700 (PDT), Mike De Petris <mikedepet...(a)gmail.com>wrote: ... 29 Jun 2010 06:22

electric fence , force field B20, 2007
8 pin SMD with blown hole in the casing. Top mark , very indistinct maybe 2 lines 0h963 0h37 maybe very stylised 4 instead of h, logo very indistinct. My first guess is a 555 but pinning not standard p3 ground, p8 +12V, pin 1 to a 10uF cap , other end to 0V, p5 tied to p6 goes to speed change pot with also a l... 29 Jun 2010 10:45

Orange Rocker 30, combo, 2006
All valve. Intermitant cutting out. Incidentally are the solder pads gold plated before soldering ? No mention of PbF but appearance & paper & indent test hints at PbF. Crimps adequte, switch functions ok, all solder points look good (for PbF) x5 inspection /tugging, preamp valve bases pass needle test. Other than... 7 Jul 2010 12:22

What on earth is a "Class 1 LED Product" ??
Today, I had occasion to look at a set top box for cable TV service. It's a HDD recorder as well, employing what seems to be a standard computer disc drive. When I came to screw the lid back on, I noticed on the back panel, the words "Class 1 LED Product". What on earth do they mean by that ? I've seen similar ... 28 Jun 2010 17:17

oops! coffee into the top of TV!
Did a bad thing to our little portableTV, a Funai, Model FT1371 EVENTS: Set coffee cup on top of TV, jostled the TV's table, liquid went down through the holes on top, and voila! Screen shrunk, went black - However, I quickly unplugged just as TV was going black. DIAGNOSIS: Took apart case to find liquid had r... 29 Jun 2010 19:37

Fire ants - computer bugs
Watched a nature TV prog on swarming behavior. Apparently these ants have stowed away on planes and taken up residence in airports in S USA states , infesting computers in air traffic systems etc. No mention in the program why jungle creatures have electric charge sensors in their antenna (stated in the narration) ... 29 Jun 2010 15:12

Fuse or fusible resistor?
Used in the battery (-) lead of a handheld scope. Schematics unpublished. Physically similar to a 1/4 W resistor, color light green. Marked "IE7A" or "1E7A". Google returns slim results, none promising. What type is this? Thanks, Dave ... 27 Jun 2010 21:36

Teac AG-790 has me stumped...
I'm about to give up... I received a Teac AG-790 stereo receiver with burn damage to the PCB underneath resistors 7R41, 7R47, 7R?? (unmarked, next to 7R47) and 7R48. I repaired all of this damage, cleaned up the carbon that had been left behind and soldered to the nearest remaining good portion of the board. U... 2 Jul 2010 15:45

Revox B225 Service/User Info
Hi, I have just acquired a Revox B225 CD player in need of repair. I have found what appears to be the only copy of a service manual on the 'web - does anyone know of another source? Also, I could use a User Manual for this beast, does anyone have an electronic copy? TIA Richard ... 24 Jul 2010 12:20