Electronics Repair

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Polk Audio PSW250 Sub Woofer

Hi I'm wondering if anyone happens to have the schematics/circuit diagram for the Polk Audio psw250 subwoofer or knows w...
1 comments posted 17yrs
posted by matt_j75
1 comments posted 17yrs posted by matt_j75

tektronix 2465 power problem

Hi, I am new in this group. I have a Tektronix 2465B scope which has power problem. when power it on, all the GPIB Stat...
1 comments posted 17yrs
posted by hongfengdu
1 comments posted 17yrs posted by hongfengdu

Discharging old style Video CRT?

I have an old Televideo dumb terminal that has shaky video brightness. It's not dirty controls; but looks to be a bad/m...
3 comments posted 17yrs
posted by jc email
3 comments posted 17yrs posted by jc email

Amstrad DRX100 Digibox (channels missing)

I phoned Sky because some channels were missing ie "channel unavailable" and they told me my box is at fault. Does anyon...
0 comments posted 17yrs
posted by SPal508596
0 comments posted 17yrs posted by SPal508596

Any cure for fading FL displays ?

Hello, I have an older audio timer, AKAI DT-320 (around 1983), whose FL display has aged over the years of usage and be...
4 comments posted 17yrs
posted by glaubitz
4 comments posted 17yrs posted by glaubitz

odd purity problems

One of the great things about flat-panel displays is that they don't need purity or convergence adjustments. I'd like t...
2 comments posted 17yrs
posted by grizzledgeezer
2 comments posted 17yrs posted by grizzledgeezer

reliability of Pioneer plasma sets

I am now the proud and absolutely delighted owner of a Pioneer plasma TV. The first thing I watched was "Amadeus", and...
45 comments posted 17yrs
posted by grizzledgeezer
45 comments posted 17yrs posted by grizzledgeezer

green dots on plasma tv set

Hi, I have gained one LG based Plasma TV set. This TV is maked around model 42V5 chassis. In dark scenes, I see high qu...
15 comments posted 17yrs
posted by leditapaolo.75
15 comments posted 17yrs posted by leditapaolo.75

Wartime miniscope , miniature oscilloscope

I've now added a preliminary schematic to the file, a number of the controls and inputs/outputs are not included. http:...
3 comments posted 17yrs
posted by diverse
3 comments posted 17yrs posted by diverse

Mains transformer goodness

Something to do while watching some less engaging TV. Unwound another large toroidal mains transformer. Suspecting doub...
67 comments posted 17yrs
posted by diverse
67 comments posted 17yrs posted by diverse

CTC160CL5 with an idiot in charge

My sisters TV had no speaker sound, a bad tuner and the thing was loath to turn on. Found out about the smps diodes and...
1 comments posted 17yrs
posted by tmwalsh0
1 comments posted 17yrs posted by tmwalsh0

Rubidium lamp source

I'm looking to do some tinkering with rubidium time sources. It seems that the rubidium lamp is the toughest thing to g...
2 comments posted 17yrs
posted by mikeybarber01
2 comments posted 17yrs posted by mikeybarber01

Burglar alarm - strobe output

My 12-year-old house security alarm 12V outputs are a siren and a strobe. I've just discovered that although the strobe...
0 comments posted 17yrs
posted by terrypinDELETE
0 comments posted 17yrs posted by terrypinDELETE