Check the power supply electrolytics, check the diodes. Jumper the power supply plug without the TR-4. Does the fuse stop blowing? You need to isolate your problem. It could be many things. Could be a short in the plug where the wire goes into it. You need to do basic trouble shooting so you can isolate the trouble area. If the power supply doesn't blow a fuse with a jumper in the on-off switch lead, then it is in the rig. If it keeps blowing with just the jumper and no rig, it is in the power supply. Outside chance it is your transformer too. The first thing to suspect is the electrolytics and/or the diodes in the power supply. You didn't say if it blew a fuse in receive or just in transmit. The way you word the question makes any possible problem suspect. Nobody can give you an answer without more information then you provide. One can only guess with your input, electrolytics and diodes will probably be the first guess. That is, if you are saying it blows when you just turn it on in receive. Guessing just shot guns the trouble shooting. Stop and think, use logic, don't panic, and start isolating things so you get closer and closer to the problem. I am not trying to put you down, but being an extra class ham, I would hope you would have put in a little more effort into this before asking for help for your own sake. It is frustrating with a question as you posed it since there are a zillion reasons why a fuse blows. Let me ask this question. Are you installing the proper size fuse in fuse holder? Do you have a manual? Are the right tubes in the right sockets? Are any of the tubes shorted. Since this is a new rig to you, don't assume my prior questions don't need to be addressed. You can't assume anything with a new to you DOA radio. Has anyone gone in there and tried to fix something and screwed something else up? Do any of the wires look like someone has been soldering in there that maybe didn't know what he was doing or does everything look like it was soldered by the factory? How are the electrolytics in the transceiver? How can anyone really give you any help with a comment, it's broke, what is wrong? Again, this is not to put you down but nobody can help you if you don't help yourself with some preliminary diagnotics. Are you plugging a 120 volt power supply into a 220 volt outlet? Seems crazy but I have no idea what you have done or someone else has done before you with this rig. It's hard to diagnose a problem by LOOKING. One needs to use an ohm meter at bare minimum and start taking some resistance measurements. This should be a good learning experience for you to develope some good trouble shooting techniques. Lee, w0vt Houston
> Hi gang: > I just bought a TR-4 and AC-4 Power Supply and it was almost DOA. It > blew a fuse in the p/s and I put another in and same. I looked in the > p/s for all the obvious stuff but nothing. Any ideas? I really am > depressed on this I can't afford to spend about $200.00 for > repair..Thanks > Fred AI5I > ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Subscribe: [EMAIL PROTECTED] - subscribe drakelist in body Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Brought to you courtesy of TLCHost.net http://www.tlchost.net/ ----------------------------------------------------------------------
