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    zenith plasma tv Z50PX2D

    HI, having a problem with this tv. there are 6 vert lines of white dots in the video, the sound is also affected as it gets static when the amount of white dots increase or decrease. the rest of the video is fine has good color and no other problem. can anyone help me with this? thanks.
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    ICSP procedure

    hi, i'am attempting to program a chip in circuit. on the board there is a jumper that connects to the Vdd pin. my question is, do i program the chip and then install the jumper?
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    heathkit it-5230

    hi, many moons ago i owned a tv repair business. i built a heathkit crt checker. worked great. i modified it by adding a on/off switch, that when activated put the entire 16vac to the htr of the crt i was testing. problem is, i don't have a clue as to why i did this? its driving me nuts. any ideas?
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    sencore sc61 scope

    hi all, working on this scope. the problem is the lcd readout. at turn on, it shows all eights and all the functions its capable of showing. pushing freq. or pp buttons does nothing. please help. thanks.
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    project not working

    i'am baaack, o.k. i bought the sub for the fyq3641bh indicator. i made the pcb and built the device. its an esr and cap meter. its seems to work, however none of the segments of the indicator light up?i loaded the hex code with a pckit2. need some help with this thing. thanks.details here...
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    display for project

    hi all, looking to construct a project and need help locating a part. the part is FYQ3641BH-11. anyone?
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    heating element

    hi, does anyone know where I can purchase a hakko clone hearing element A1322. I want to buy from an American seller.
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    resistor value

    anyone know what the value of a resistor marked as 100OM on the schematic?
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    cap tester repair

    hi all, I have a Heathkit IT-11 i'am restoring. i'am at the point where I need to calibrate the leakage pots. the elecroylytic pot adjust fine for 2ma. the mini electroylytic and the non-electro pots can not be adjusted. the mini electro needs to be adjusted to 15ua and non-electro to 2ua...
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    Motor controller ic

    hi, anyone up to the task of detailing the complete operation of the AM5888S motor controller ic?
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    German translation

    hi, just finished making the german designed Sprut esr meter. the words I need translated are: messe, lade, entlad. can anyone help?
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    repair parts

    hi forum members, I have a Tivoli One BT radio and I need to find a source for repair parts. does anyone know of a source?
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    Esr Meter Build

    hi forum members, ijust completed a build of an esr meter. it is the ludens design by Manfred M. I would like to use this meter to check caps in circuit. the basic requirement for this is to keep the test voltage under .6v as to not bias on any semis in the area. i'am seeing about .5v at the...
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    pcb

    hi members, I need some advice on making a pcb. the board I want to make shows a top view with the componets shown. this is the only pcb shown. my question is, if I make this board won't the components layout be covered with resist and also be on the board? is there a solution to this?
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    isolation transformer

    hi, I would like info on how to use an isolation transformer. I have an rca and b&k iso transformer. I going to want to measure waveforms in a plasma tv. I'am going to be probing using both the hot and cold grounds. a friend of mine said I need to use two transformers one for the scope and one...
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    voltmeter/ammeter

    hi all, i'am planning on building a power supply. i;am going to use two meters(analog) for volts and amps. my question is, is the voltmeter hooked up before the ammeter or vice versa? i know the ammeter is hooked in series with output while the voltmeter is in parallel but don't know which comes...
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