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In an effort to reduce spam and the spread of viruses, we are now providing this form for you to contact a person that has placed an ad on QTH.COM. After submitting this form, an e-mail will be generated and sent to BOTH you and the person that placed the ad. The e-mail will contain a copy of the ad, plus your e-mail information and your comments.
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| Ad Number: | 1766735 |
| Date Placed: | 05/01/26 |
| Name: | HiramOjeda |
| Phone Number: | 7702983580 |
| Callsign: | AG4KH |
| Category: | AMPHF |
| Heading: | help with Heathkit sb-230 amp |
| Ad Message: | Hello:. just got a heathkit sb-230 in good condition but with issues. prior owner had it working with about 450 watts out using 75watts drive(tube is good) which i think is about right, so he decided to replace the caps With 6 new 220mfd 500vdc to try to get more output so he turned on and show about 2400vdc in the meter but after a while the meter died "no smoke".. i opened it up and yes there is HVDC and plenty of it going to the plate, dont ask me how i test it!!! l learn the hard way LOL… it hurt!!! so i place an old HVDC tester to check, and the picture show the reading from plate.. i do not have any schematic and the ones in the webb are too small for me to read nor i have the ability to work any more in this equipment..all that said I know there are people here than can help.. Oh forgot to mentioned that I check the meter selector switch and some voltage divider.resistors as well as diodes..tested good any suggestions will be really appreciated.. 73’s Hiram. |
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