Hammond 290XXA Pro Jr. 117V Replacement Power Transformer
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Create Free Business AccountKey Features
- Replacement for Fender PRO JR. (ref. P/N 41782)
- 117V @ 60 Hz primary
- 260V @ 170 mA high voltage secondary
- 6.3V @ 3A secondary
- Bobbin winding
- Designed for drop in replacement and a factory-similar look
- 2.55 lbs (1.16 kg); RoHS and REACH compliant
The 290XXA is a 290 Series power transformer listed as a replacement for the Fender PRO JR., with similar amp P/N 41782 (reference only). It is intended for amp technicians and owners who need to replace the mains transformer in a 117V Pro Jr. tube combo.
The primary is rated 117V @ 60 Hz. There are two secondaries: 260V @ 170 mA (Secondary 1) and 6.3V @ 3A (Secondary 3). The series ordering table lists the winding type as bobbin. The manufacturer's short description is simply POWER TRANS.
The 290 Series was designed for drop in replacement of original units, with parts physically designed to look similar to the original factory units where possible. Material and design specs were kept as close as possible to the original part to preserve the stock tone.
The 290XXA ships at 2.55 lbs (1.16 kg). It is RoHS and REACH compliant, with UPC 623980284392 and UNSPSC 39121301. Compare the listed ratings with your existing transformer before installation, since the amp model and part number are given for reference only. Unlike the Blues Jr. transformers, no 20V winding is listed for this part.
Ideal For
- Fender PRO JR. power transformer replacement
- 117V compact tube combo repair
- Stock-tone amp restoration
Overview
| Series | 290 Series (Tube Guitar Amplifier - Power Transformers, Replacement & Upgrades) |
| Product Type | Power transformer, replacement for Fender guitar amp, 290 series |
| Short Description | POWER TRANS |
Electrical
| Secondary 1 | 260V @ 170 mA |
| Secondary 3 | 6.3V @ 3A |
| Primary Volts | 117V @ 60 Hz |
Identifiers
| UPC | 623980284392 |
| UNSPSC | 39121301 |
Amplifier Reference
| Amp Manufacturer | Fender |
| Amp Model (Ref. Only) | PRO JR.* |
| Similar Amp P/N's (Ref. Only) | 41782 |
Packaging & Shipping
| Shipping Weight | 2.55 lbs (1.16 kg) |
Construction & Finish
| Winding | Bobbin |
| Appearance | Designed to look similar to original factory units (where possible) |
| Design Intent | Designed for drop in replacement of original units |
| Materials & Design Specs | Kept as close as possible to the original part to preserve the stock "tone" |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
Which amp is the 290XXA for?▾
It is listed as a replacement for the Fender PRO JR., similar amp P/N 41782, for reference only.
What is the 290XXA primary voltage?▾
117V @ 60 Hz.
What are its secondaries?▾
260V @ 170 mA and 6.3V @ 3A.
What winding does the 290XXA use?▾
Bobbin.
How heavy is it?▾
2.55 lbs (1.16 kg) shipping weight.
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