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Hi John No.. If the driver is gone then the power will be VERY VERY low. and distorted I think. Replace the driver for the unit. Initially set the bias pot midrange. and the power output pot

Hello. I have just joined the group. Steve's QRP Plus has been passed on to me and I was delighted to learn that there is a group still celebrating this classic rig. Steve has very neatly replaced an

Thanks Guy, I have passed the radio to a fellow member of G-QRP to have a look at - I have passed your comments to him. Regards, Steve G0KYA

Hi Steve, A friend notified me that this was on the space. I had turned off all email. Not many people are still working on these very nice radios. I have repaired many and given them to others to

Are you sure the IRF-510 is genuine? Lots of fake and fraudulent parts (transistors/FETs) on eBay. Most from china are fakes. Get one from Mouser, or Farnell. That way you know its real. 73, Jim

I bought an Index Laboratories QRP Plus at a club sale. It was supposed to be fine, but didn't receive and had zero output (on CW). After a big desoldering struggle I fitted a new SBL-1 (U2), which

Hi I purchased a Labqrp transceiver. On receipt it only had RX and no TX. Are there any common problems too look at first. Any help would be much appreciated. G0VJH. Jeffrey

Thanks all. That did the trick! Good as new. Now it's for sale. What do these typically sell for? Thanks, Jim W7RY -- Thanks and 73, Jim W7RY

Yes, the backups battery needs to be replaced. Op ma 5 jun. 2023 05:26 schreef Jim W7RY via groups.io <jimw7ry= [email protected]>:

Yes, and then it needs to be reset.? You can download a manual here <https://w1hue.org/QRP_PLUS_Docs.html>.

Just picked up one of these little gems at a hamfest this weekend. It probably hasn't been used is many years. S/N 0540 Seems to work fine, except for the memories seem all out of wack. Does it need

I have a broken QRP+ that I am trying to sell for a silent keys xyl. I tried to repair it by replacing IRF510 because the radio was pulling down the 12v PS to around 3 volts. It was a pain to swap

Keys The only way I know to 'load software' is to replace the eProm that contains the 'Firmware.' Any loading of the eProm needs to be done outside the rig and I'm not even sure blank eProms are

Good morning Keys Delighted you have the rig working again. I use mine regularly -- probably once a fortnight. My main QRP rig is a second hand (new to me) ICOM IC-705. It's quite amazing the

Hi Bruce, was a long time of the grid but start up again. It seems to be working again on my side. Still have to do lots of checks before I can say that it is fine again. I looked on the internet and

Hi all I have a friend's QRP++ on my workbench. So far I have relaced the "blown" mixer by a SBL-1H and the RX is alive again. My friend was experiencing some troubles while trying to operate in SSB

thanks I have ordered a new IRF510. When I remove it I will check again to see if the short is still there. If it is I guess I need to see if I can find a bad cap or diode in the area. Thanks for the

My best guess is the IRF510 has an internal short.? Or, if you are lucky, it could be the cap or diode near the power connector. If you need schematics and board layouts, you can download them from

Hi I took a 3A fuse out of one of my fuse boxes and some how a 30A was in the 3A box. I should have notice the size. It now has a 3A fuse which might blow but I have all three board out right

My guess is that the IRF510 output? FET is shorted due to reverse PS polarity or a static surge coming in on the antenna.? It is also possible that the diode that is meant to protect from reverse