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Wolfgang Sundhaus
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Original well scanned manual. Got the job done. Microwave problem found & corrected. For $5 and a new magnitron from ebay, it was a cheap and good the first shot fix. Electrical schematics allowed me to mage sure every thing else was ok before cutting and order for parts. Hard to live without.
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I was very skeptical of this website, I have never downloaded manuals before. I put it on the AMEX and payed through Paypal to ensure protection. I got the manual exactly as described and now I can replace the filter capacitor for this amp. Great Price, others selling for 12.99 or more and this is the same manual. I will search out this website for other manuals. Thank you
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Manual was reasonably easy to follow. I am not an engineer or know much about electronics but with the manuals help I was able to figure out the problem, identify the part required for the repair. Replacement part cost around $30. Whilst replacing the part I was telling myself, "this aint gonna work cos it seems far too easy". Took about 15 minutes to do and my plasma TV works a treat. Would never have been able to do this without the service manual.
Touch current check
(After completing the work, measure touch current to prevent an electric shock.) �Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check..
�Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure D.1
�The potential at any point(TOUCH CURRENT) expressed as voltage U1 and U2 does not exceed the following value:
The part or contact of a TERMINAL is not HAZARDOUS LIVE if: a) the open-circuit voltage does not exceed 35 V (peak) a.c or 60 V d.c., or,if a)is not met, b) the measurement of the TOUCH-CURRENT shall be carried out in accordance with IEC 60990, with the measuring network described in annex D of this standard. The TOUCH CURRENT expressed as voltages U1 and U2, does not exceed the following values: - for a.c.:U1= 35 V(peak)and U2=0.35 V (perk); - for d.c.:U1= 1,0 V, NOTE 5 -The limit values of U2=0.35 V (peak) for a.c. and U1=1.0 V for d.c. correspond, to the values 0,7mA (peak) a.c. and 2,0 mA 2,0mA d.c. The limit value U1= 35 V (peak) for a.c. corresponds to the value 70mA (peak) a.c. for frequencies greater than 100 kHz.
Annex D (normative) Measuring network for TOUCH CURRENTS
A
Test TERMINALS
Rs= 1 500Ω
Cs= 0.22uF 10kΩ
B
Rb = 500Ω
U1
0.022uF
V
U 2 (V)
IEC 802/96
Resistance values in ohms(Ω) V: Voltmeter or oscilloscope (r.m.s or peak reading) Input resistance: �1 MΩ Input capacitance: � 200 pF Frequency range: 15 Hz to 1 MHz and d.c. respectively NOTE-Appropriate measures should be taken to obtain the correct value in case of non-sinusoidal waveforms. The measuring instrument is calibrated by comparing the frequency factor of U2 with the solid line in figure F.2 of IEC 60990 at various frequencies. A calibration curve is constructed showing the deviation of U2 from the ideal curve as a function of frequency. TOUCH CURRENT=U2/500(peak value)
Fig.D.1
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