In stampford generator model no.TC375FH can we change high voltage 400 into low voltage 220? is it possible?

1. Yes, this happened to my Samsung. It was the high voltage circuit on the power power. The TV has a chip that check all the circuits on all three boards. When a circuit is low, then it won't turn on. I checked 380 volts at the capacitor connected to the high voltage transformer. It should have been at 390 volts. I took out the 100 uf rated at 450 volts, but only have two capacitors lying around: 150 uf and 220 uf rated at 400 v. I connected them in parallel make them 370 uf at 400 volts, and the TV is now working fine.

My Samsung 50 inch had the same problem. Searched the web and it was the only capacitor in the power board that needed change, voltage was 382 volts. Replaced the old 100 uf 450 volts capacitors with two capacitors 150 uf 400 volts and 220 uf 400 volts in parallel and measured the high voltage at 390 and the TV was back to normal. (Make sure the capacitors from an old TV and computer power supply is rated for at least 400 volts.

What make , model an year vehicle ?
Generator L Terminal P1637? / Possible alternator problem The powertrain control module (PCM) uses the generator turn on signal circuit to control the load of the generator on the engine. A high side driver in the PCM applies a voltage to the voltage regulator. This signals the voltage regulator to turn the field circuit ON and OFF. When the PCM turns ON the high side driver, the voltage regulator turns ON the field circuit. When the PCM turns OFF the high side driver, the voltage regulator turns OFF the field circuit. Strongly suggest you take your vehicle to a ASE certified repair shop or the dealer .

Hello,

I believe you are referring to a 220 VAC generator. If you have the correct 60 Hz check the voltage of each leg to neutral. If one or both are low it is in the generator section. The regulated voltage is just for the peak voltage. It does not affect lower voltages unless of course there is a loose (hot) connection.

I hope this helps,
Vinnie

Check for floating debris in fuel tank possibly restricting fuel flow thru screen on bottom of fuel pickup;

Hi,
The voltage runs that high when there is no load so that as you load it the voltage will not dip too low...usually the higher voltage will give less trouble then low voltage will.. you also will use less amps. to run anything at a higher voltage... this places less stress on the generator...

I would not mess with it...when it is fully loaded you will be down under 120v

heatman101

High no-load voltage Capacitor with high capacity
Check and replace. Low no-load voltage Speed to low Check and adjust rpm Faulty rotary diodes Check and replace Breakdown in windings Check winding resistance Capacitor with low capacity Check and replace. Proper no-load but low loaded voltage Capacitor with low capacity Check and replace. if wires are connected start with the Diodes first electronics parts stores will have these in stock as well as cheeper. hope this helps

There are basically 2 possibilities that can cause this.

1) Enigne RPMs are too low. but, since you already played with the throttle, this probably isn't the case. RPMs should be about 3600 though.

2) The voltage regulator / capacitor has high ESR (resistance) or is bad altogether. Replace.

85 volts represents residual voltage. It is possible that your unit sat for an extended period and lost it's magnetism or the excitation system failed under load. check your manual for a procedure to "flash the field". If that is not successful, e-mail me and I'll tell you how to trouble shoot the failure.

Solved problem upon installing a ready made stabilizer. Thanks for the opportunity to publish my inquiry. Chawah.