Search results

Found it- (1ohm resistor soldered to the switch) and it was fried! Hope that fixes my woes... A leg of the voltage pot broke off (shows signs of having shorted) so I'm waiting for a new one to arrive before i can test the whole business... Thanks as always!

Still troubleshooting this thing, but I've got the circuit board from a 400hz VR converted to 50/60. Bench tests out OK. I'll give a parts list soon... Also, my initial trouble seems to have stemmed from a short in the Voltage Adjustment circuit, starting with potentiometer R1. I'm following...

Oh yes, I understand that they are not interchangeable! I'm talking about the circuit board only. I'm using it to build a 50/60hz, as most of the components are the same, minus a few differences. Those differences NEED TO BE CORRECTED before a swap is possible! That being said, it's an easy...

So I figured out that the TRC 19890-002 400 Hz circuit board is the same (19893k stamped on the lower rt corner of the board) as my 50/60hz 19870 model. There are a few different parts, but it should swap out fairly easily. Thanks all for your help!

It's the same one from the other thread i started- the TRC 19870

Yep, I too saw that pic on Ebay... Thanks anyway!

Hello, Echo, any chance you took a pic of the circuit board? I'm needing to replace the 14 pin chip in my VR (see pic) but I don't have a part#!

Well, I found the problem... a 14 pin chip inside the Volt Reg. Any idea what this is- since any part info is burned off!? Strange that the fuse didn't blow; but I guess it makes sense that a failed relay could cause this. If I have to replace the whole VR, are there any interchangeable part...

Yep, fuse tests that it hasn't blown...

Yes, it does have the fuse... it didn't look blown, but I'll check it tomorrow. Man- hope everything is going well towards recovery!! Many thanks good sir.

Many thanks for your response. Apologies for being so vague. The ID# is K15 . There are 2 stacks of 4 of theses identical relays inside the control box, right next to the resistors pictured above. Part#77342 KUP14D15-2 RELAY, ELECTROMAGNET. Here's a pic of the base of the fried unit while I...

Hi guys, I'm having a spot of bother with this 804a genset that I got a few months back. It seemed to be operating fine (under no load) whenever I would crank'er up here and there. Anyhow, now that I'm getting close to actually using the thing, it started acting up. It started when the upper...